Inspection of containers

The invention relates to an apparatus for signaling the presence of extracted matter. and / or cracks in translucent containers, including said apparatus; a zen— for inspection; means * to be born rotate a translucent container within the inspection area; means to provide an intermittent beam of light adapted to vertically explore the inspection area; a light collection apparatus for inspection; aedios to generate an electrical inspection line, etc. corresponds to the amount oc lu.t which steps through --1 translucent container and which affects the apparatus - - oogida corros pon! in you; memos to conpcrar said inspection ne ·· with an - e. — n ce accp'axdon. e ^ ectr. η— preue .eminada * y · ** οοηθ— ¿λ ·. * ^ oi.e ^ xnr una; ee ^ cr · ^ - CáeZO OV — XtCO X% 3 »^ 4. wO »- · <- ^ * c * ¿. * C i · * u * - v - · of the aluminum train container -o * .all .. per ñoba ~ o ne un vuí -.— nj ^ l ^ OCO e «- -> ** - 'muC *> 0o 0 -— ¿OJ» * - / - AuTi c * Áxλ. i «» ItG C- »» w— ·!. *. <. ··.> κι i vc ¿uJ Oa m.lü a / tu - v e '»

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k .. · ——t · ^ —iu £ ü6 - ·· vimim see below, due firstly to changes in colcr density from one package to another and secondly to variations in the bulk of wall from one cavano to the next · It is also necessary to carry out the appropriate mailings for the effects of ambient light. It is desirable to provide an efficient light-gathering apparatus.

With a view to obtaining a satisfactory apparatus for signaling the presence of foreign matter and / or cracks in translucent containers, an appropriate apparatus and method in the British patent H * 1,206,136 of the present applicants is disclosed. The invention in this patent application is not suitable for detecting the continuation of foreign matter and / or cracks in translucent containers, since the color density and / or wall thickness of translucent containers vary significantly from one container to another. Nor does the merory of this patent application explain the use of sooho or heoho. of acceptance I must and can vary in fuuclon from the vertical position of the interrd light ray. Keep the container in a roll · This application does not show the reason why the ambient light has to be reordered, they have been proposed differently from other devices and methods to detect the presence of foreign matter and / or cracks in outdated containers. These are not only more effective than the invention cited as undesired in British Patent No. 1,2C6,136, but do not achieve any of the desired objects in the present

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Act No. 254,565 invention. i

The object of the present invention is to provide an apparatus that will signal the presence of foreign material and / or cracks in translucent containers at all points of the same with the same response or sensitivity independent of the part of the container being explored. Another object of the present invention is to provide an apparatus for signaling the preaenoia of foreign roots and / or cracks in translucent grafts, since the color and / or wall thickness density of these vary significantly from one to the other. It is also an object of the invention to facilitate others for the lighting effects. Yet another object of the present invention is to provide? an efficient light for the reoogida apparatus.

The first object is obtained according to the present invention by means of which means are available to vary the signal of acceptance depending on the vertical position of the internal light ray relative to the container.

Another embodiment of the invention provides an apparatus for isolating the matceria pressure (continues on sheet 5)

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254363 Strange and / or cracking in translucent containers when the color density and / or wall gmeac of the same vary significantly from one container to the other available. means to obtain, before inspection of the container, a mast inspection signal in a predetermined vertical position of the intermittent beam; means' to adjust said master inspection signal or to it. soda! of corresponding acceptance or an appropriate value while the coefficient still desires between the inspection signal and the acceptance line in said vertical position of the beam of the intemalite, puopouioning the coefficient of. original signal respect to the signal to adjusted an adjustment factor, 'and means to adjust the line. of inspection or silk :! of acceptance through the adjustment factor during the inspection of the container,

Another object of the invention is achieved by the provision of an ambient light orion device which is made easy to determine before inspection of the silk: elóccrioa, corresponding or the ambient light that affects the apparatus of recognition of lus and in the oual diono line of light am ^ i ^ '^' sa sa eléctuioaa the silk :! of aocptooión or is subtracted from the line of inspeoolón. dwuoats 3a inspeoolón del tuansluoiña container.

Another object of the invention is achieved by arranging a light recognition apparatus. que corajpuende: one platform; one peal stem of light diffusion parallel or separated from the front surface of the platform; and one plurality of fiber optic elements, each having

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fiber element. Optical a front, intermediate, and posterior portion attached by any appropriate organ to the front surface of the platform in reciprocal-spaced relationship, - and slapped the back of all elements funolonally coupled to a detector device.

The advantages obtained by the present invention are mainly that the presence of raiteric, extraneous and / or cracks is signaled independently of the position that such extra matter and / or cracks occupy in the translucent container. Instead, the apparatus according to the present invention is adapted to be used with containers whose odor density and / or wall thickness varies significantly from one to the other, which has not been previously reported. The present invention also corrects the effects of ambient light and light fixtures by providing an efficient home appliance.

One form of reallsabOidn of the invention is represented in the 3 'planes as detailed αέβ particularly in the following description.

fig. 1 is a side elevation, paroially in cross section, of !. apparatus according to the invention;

fig. 2 is a view in cross sectional view or along the lines Il-II of fig. 1;

fig. 3 is a side elevation of part of the apparatus;

fig. 4 is a plan view and cross section along it. of the Irnirae X-X7 in fig. 1;

fig. 5 is a schematic view paroially in pers ^ peotive of piarte of the apparatus of rooogida of light-in • V. * *&gt; Φamuc-aauss i 'T v-.

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/ embodied in OL invention; _t Fig. 6 is a circuit diagram of part of the oortrol equipment;

fig. 7 is a drouitc of a necessary auditory control circuit when you wish to perform color density oreography;

The fig, β ea .a esquado do some sofoplas ti ^ pL ^ oas of expLoreol ^ ón and control;

Fig. 9 is an osqwaaa of some expiation signs and other goaoyados an Control circuits; and flg, 10 is a schematic of the expiration signals and some appropriate control signals generated during the preparation of a translucent container.

Referring to Les planes, and beginning with Las flgs. 1 to 4 respectively, the device includes a light projector 1 and an associated mixer 2 to produce a slot or concentrated stereo tape of Light 3,

The light strip 3 is projected on a rotating tap 4 which has support for Luntosnto, see silver mirrors for external reflection 5, each of which has an axial length of 2.54 ex (1 piug «) and a width of from 1.90 am (3/4 piuLg ·) · if drum 4 is fixedly killed on an axis 3 which has a pulley 7 aoai ^^ x ^ Sa at 0 £ area 8. (see fig. 3), coupled to the pulley 9 of an eL ^ úotrL ^^ or 10 motor, 'the drum 4 being mounted, the oLéotrLLoo 10,. and the m &lt;o&gt; ιcaism associated within an ou ^ biLorta 15 Luo has an opening 16 that forwards the entrance of the light ribbon 3 through the tubada 15 to the mirror-carrying drum 4 ·

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Since the light tape 3 falls on each of the rotating mirrors 5_V It is reflected down below through an opening 17 arranged in the floor of the cover 15 to three flat mirrors 18, 19 and 20, thereby providing a repetitive scan number of 3a.

the reflected light tape 3a is also reflected from the mirrors 18, 19 and 20 which are mounted angularly inside a vertically arranged column 21 below the cover. A .22 turntable (only cross-examined in childbirth; and by dashed lines in figs · 1 and 3 surrounds the odimna 21. the oolumn 21 has a vertical slot 23 that loses the output from the same point of the - ointa of newly reflected light 3b.

$ e- would appreciate that for example due to the relative arrangement of the mirrors 18, 19 and 20, a tape of 3bv oundo is projected from it. The upper part of the mirror 19 * eerd de heoho deflected in a angle md plane not with respect to the horizontal that ray 3b when leaving the lower part of mirror 18. There is therefore a slight auparipion of the light mark 3b which is reflected from coluone 21.

the inclination of each one of the mirrors 18, and -20 with respect to ?, vertical axis of the ooltmua 21 is arranged - to ensure that the beam of light that is produced by it is produced.^,Axisnte impact on the trensluo envasedc container in the angle of the lnoldsnβls effect · It will be appreciated that the internal reflation of light within the container may produce response errors. Addendum ee - important sseguisr · / 1 O

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that the critical areas of the container are sufficiently explodable and therefore an overlap, as described above, during vertical expiation can be eliminated.

Referring to the flg. 3, fctoBenscres 45 * 'mentioned in usual fozma scbre tcmilloe of advance and 47 * se. they project at the entrance of the - box 21 through a slot 48 · The fctOsenscres 45 go functionally accpladcs to the control device as it was downloaded. - will look ahead. Are the fctcsenscres 45 colcca? two in such a position that they intercept the external edges of - the execration light tape 3b reflected from the mirrors plancs 18, 19 and 20. It will be appreciated that the vertical positions of the fctosenscres

Four. Five scbre 3a cducra 21 scn adjusted by tomiill03. advance 46 and 47 ·. Supported by the rotary table 22 there is an element to modc of pait &amp; lla 25 provlstc of a vertical slot 26 (reprinted in three positions in.²⁰ the ^Fig. *), which was used to include all the parts or one of the repetitive light tape 3b, therefore, the last one in a narrow ray of the intermittent 3c that 'passes through an angle of 20 ° (see fig. 3) when the line 22 and the groove 26 are rotated, Xf si -flashing light ray ccncentradc, in succession dencmL ^ dc rayc of exploitation 3o, exploded through an angle in a vertical plane and smoothed through of an index on a plank borlacn-ted., 8e ccmipretáfcrd of course that 'the position of the slot 26 ccn' with respect to • 30 a -bottle -27 fish with constant * - that is, at posi-10- ^

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tion represented in the iig, 3.

The bottle 27. capable of being inspected, is transported around the periphery of the turntable · 22 by means of nails or projections (not represented by Lao)

-₅ that serve to press the bottle ·· 27 against rotating rollers 28 that make it rotate as it 'passes through' the scanning area penetrated by the contracted scanning beam 3o, the latter being focused substantially on the axis of the bottle 27 · The lus that passes through the bottle 27 is absorbed by a reoogida device. of light generally indicated by. the reference number 30 associated with a photo-mil pl 1 cador 34 that · encourages a signal to a control circuit (see fig · 4). Then. they are described in greater detail. the light recognition apparatus 30 and the control apparatus. Referring to fig. 5 », the light collection apparatus 30 is illustrated, which includes several fiber optic elements 31 mounted on a matrix device on the front surface of a platform 32, The optical fiber elements 31 are mounted forming a regular square mtris of lateral length D, part of which is represented - in the figure »5« The other cxΊ '.

three of the fibers are joined to each other to photograph a beam 33 "and its extreme surface is suitably shaped and optically polished and coupled to a photosenaor element 34", namely a photo-multiplier tube. In this embodiment, a 35 * light diureous screen is positioned by an opal glass bead flanged at a certain distance (H) from platform 32.

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fraeoiéi and reflection weighing through bottle 27 but for ease of illustration fig. 5 shows the 3rd scan beam as a relatively stellar ray © that falls on the diffusion bracket 35 shots pass through bottle 27, 3rd scan beam moves up and down, and across the top mirrors of the 3S diffusion pontoon and to correct a decrease in the replacement or use it reaches the edge of the ptaattaHa, mirrors (not shown) are placed on the perimeter of platform 32 with their reflective surfaces. norm respecting the front surface of the. pía-aroma y enirando bada ds &amp; tro to bravés de le aatriz of the fiber optic demwitos.

Reoogida apparatus of light 3Ü that is given here, oribe consists of 247 plastic fiber optic elements, each one 60 cm long and 0.15 on (0.06 ptOa.) in diameter, arranged in an array reguar 13 x 19,? ooi a separation between elements of 2 om · the small frog taies of the elements are fixed The urticant organ »of aujeoión appropriate and a black nyloi print that measures 28 om x 40 om x 0.63 om (0.25 in.) thick,,

The iyloi matrix platform is placed on a reotaiguLer frame structure with two sides, poMlela oon and separated 4 'om from a glass partition op &amp; Lo rim &lt;l &lt;&amp; ia aide 28 om' x 40 em Lea ouatro supíneles interiors ^de the structure gives m&gt; nlage between the matrix platform and the pantcaUa of ---- / '

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Diffusion have four silver front mirrors attached to them ^pTo facilitate correction ^de the edge effects described above. The backs^de elomentos ó^ptioos ^de fiber ^dThe plastics are rolled together and the external surface of the beam is o-shaped, polished, and optically placed approximately 5mm from the photocathode surface. ^din a photo-culti tube^pli (Midor 50 mm 34.

£ 1 operation of the light collection apparatus can be adjusted by a variation to^pro^piada ^dThe parameters such as the number, cross sectional area 'and spacing' of the individual fiber optic elements in the miter, the distance between the front parts of the elements and the screen ^dand diffusion and the characteristic of diffusion ^dand the actual size.

In oierta? For applications it may be convenient for the apparatus to present a graduated or locally non-uniform response to incident light. * Ato can be plowed by a convenient modification of the clearance^de loo elements ^opTics of uniform cross-sectional fiber in the matrix, that is, forming (E) one varies^bIt deposes the placement in the mitriz of the olements that are considered or, alternatively, Mars, graduating in an appropriate way the creas in transverse drying of the elements ^optioo3 ^dand fiber in the root.

In the ourse of the o^peraoión, ol apparatus de ins^pAccording to the invention, it is located next to or along the route of a transport line. ⁽not shown) which carries

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the botanae that have to be unappealed · These are OLI-, inserted into the rotating rollers # 28 against loo ouaLes are held γ dan vu ^ Ltaia while turning the table 22 ·

It is known that during the exploratory period, the beam corresponds to the 3c passing through the slot 26 of the part of the element, it expounds in the form of a piano on Rartinai and it is wafer to ng varee on a harisontta plane. by the rotary motion of the element to node of pastaia 2 $. Menás, the 27th bottle is obliged to eontisnameate in a rotary sense during the transit through the expopaolon zone, and the degree of «splormolóa is bleed ^^ l ^ onL ^ So de Manara that the total area of ​​the bottle it is eo'hrsuzρlorade by 2δ%. KL epo of expporaooán and '' the rotation of, the bottle was carried out, nlzan of such «odo qua ae produces a taooLtepo of 10% between explorations euoeaiiam» '

If the light orthosis that falls on the respective collection apparatus 30 is reduced due to a predetermined level, by virtue of the point of 'imputo or ray of light that is thus paralyzed or totally obstructed or absoxhido by strange strangers' in the b ^ o ^ U &amp; 27, ae r ^^ c ^ olra the yield 'of the ñoto - aW.tiplloed3r 34 v therefore generating a ^ ñtú. of rsMhαtemlentO eláctrloa indicative of the presence of JA «atería axtraSa in the toOella 87 · The sign of ^ oh &lt;^ alento de bsc ^ ib« do ganermda is added to a «caninao de reehazo as described in the patep te hpl.tánl E * 1 · 206 · 136, which deviates bottle 27 from the return flow to the transport line (not shown) · · - ·.

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It will be appreciated that the effective operation of the operating apparatus according to the present invention requires ₍that the various operations were synchronized and truncated. Some grooves of the inoperation apparatus must be synchronized with the rotation of the turntable '22, that is to say, with the translation of the bottle 27 from the inlet feeding booa, through the inoperation zone,' the feeding boa is enough output. Other functions' must be synchronized with or controlled10. '&lt;ats by the position of the scanning beam with respect' to bottle 27 which has been inspected. Continuously, the way in which these signals are obtained and processed is obtained, and they are synchronized.

It would be appreciated that the control splits to 3rd rotation of '3rd table 22 are usually obtained routinely from o ^ any type of sLnOr'onization unit 69 (see fig, 6) »for example eleotr * oni sensors &lt;oos that are oolooan around the circumference of an appropriate rheumatic disc that presents so many teeth and openings in the periphery as posidons; λ '.¹ 'of the bottle exist on the turntable 22; for example, in 'the present form of realimolon, the disc, not represented, has co-teeth and is driven by a one-to-one gear train' from the

I '' 'rotary table 22. By' oojmdguionte, while each botolia 27 moves in cough to the table, they generate a neoesorial number of 'outgoing reactions'. These synoptic PLU-saoions are identified by the letters of referenoia TP and an appropriate referenoia number in the following description. THE PRECISE OPERATION

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these pulsations. Synchronous can be achieved by proper adjustment of the peripheral position of the organ

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* The sSncronizaoión unit. It is used to provide ssSULss that regulate the following functions:

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1. Angular extension of the inspection area during which a bottle is examined *

two. Chronoxjjjo of the rejection signal accumulated by means of a change recording monorial organ before todonating the mechanism of rebirth.

I AooionamLenco of the mechanism of rejection oxaotammite at the appropriate time for. ensure oorreota synchronization • eoconic.

It is always necessary to identify the beginning and end of the desired exploration of a bottle in order to activate the inspection operation during and only during this period. On the other hand, given that it was realized that it may be necessary to have different levels of aoeptaolon for different post-lateral movements of the ray of exploration, it is necessary to have neocsary control signals to activate ltΐenutptórss and effect 1 &amp;. Difference required in the voltage supply, according to.^sand desoribió toás ..folante. Lords &amp; Celery^pito^dFor all of these factors, they are derived from photosensors 45 to which reference has been made to continuous detection as corresponding scanning signals and were identified by the SP3 referendum. proper illusions.

Before considering the question, of the operation of the apparatus according to the present invention »and ovs. * 1 . , '¹

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254303 Nor is it necessary to briefly pay attention to the problem posed by the inspection of a translucent container, but to point out the presence of foreign mitaria and cracks. It will be appreciated that the production of lines from the photoaa.TipLieador 34 will vary according to the amount of the master train through the bottle 27 «

Referring to fig. 8a? the line of solid produced by the photo-mu.tipli &lt;ador 34 can solve-&gt; It is in two oomjpnGntts, one consisting of the voltage generated by the beam of expLoraeidn 3o that has passed through the bottle 27 - and the other Due to the dispersed environment that has escaped through the device as a putatana or a ncrrβ8pnldiβnta shield and which will increase the ability of the transmission to the rctomu.-I · tiplCaador 34, according to , It is shown. It was apprehended that this line due to -the environment will vary · the level of light diha, the fig, 6 (□?) Illustrates the line of solidity, from the photo with the β 'ηβη1β of lus amblante al: mιitaic ,. - Later on, the way in which the ambient light is eliminated will be moved.

Please refer to fig. 9 (a), the

I, · starting line of 34 aorregidated in nuatdo a lus This master line the affects of two oiGcurenimi.etton or crack that caused the oreetas XI and X2j estrlCcamlante these orestas XI and X2 crn ^ is ·,&gt;

You are made of depressions or the silk is negative.

In order to - identify these XI and X2 orestes on the line of - · · expLcracLÓt or innapecolot, it is necessary to compare the silk, of inspaction with some silk of pre &amp; ptaci4n pre

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!, 'determined type. Later on, the way in which this aoeptaoidn signal is obtained is analyzed.

Referring to fig. 9 (b), the inoperative signal of FIG. 9 (a) with a constant aoeptaoidn voltage superimposed thereon. It will be observed that a constant voltage of the current will be observed which will indicate the year of the obstructions or cracks, that is, the one that caused the crest. XI is dated while the other causing the X2 crest will escape without being signaled.

Referring to fig »9 ⁽or) ^Y 9 ⁽d), it will be appreciated that a variable acceptance signal like the one illustrated in fig. 9 (d) would be more credible than the SEBU. of aoeptaoidn constant illustrated in the xí &amp;. 9 (b). fig. 9 (o) illustrates this superputable variable feedback signal over the inspection signal. There are crests XX and X2 and, for the next reason, the obstructions or cracks that cause them in the sign of inso peoidn-son identifo &lt;üóLa8. It will be appreciated that the main one. The only reason for having a variable signaling signal is that the amount of light transmitted through the bottle through a bottle will vary between the bottom, the neck and the body of the dima. This way a sign is not appreciated :! of aoeptaoidn 'variable in the casce in which the. variaoidn in the toαlmsoi.8idn of light on a container toanslúoido between urn and another part of the dimium is not. significant.

It would be appreciated that, in the event of an inspection apparatus designed for small stained glass containers, an additional proexexdehyde of the. signal of 'imspeooiOn „With /?

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Such containers must take the necessary measures to compensate for the variations in total light transmission that will occur αβ one container to the next, due firstly to the 03 changes in odor density from one container to another and, secondly, to the differences in wall thickness from one container to the next.

fig. 8 (g) illustrates the inspection that would be obtained p&gt; ​​from two similar bottles that had slightly different color densities.

· Referring to fig. 6, the inspection signal generated through the load resistor R1 of the photo-meter 34 is illustrated in fig. 8 (a), if this signal is supported 8a to a differential amplifier Al. For simplicity of description, the various eshales generated in the apparatus are found for you. made by the figure in which they are illustrated. A pulsolon gives SP4 control derived in foima oonv &lt;moid) aL from the extreme scanning signal SP2, which in turn is derived from one of the photoeensors 45 (figs. 8 (b) and 8 (o)) is fed to through an analog switch

YES to discharge a condoning ^ GL from a teacher retention 60, (fig. 8 (e)). The control pulse is also fed through a delay device DL1 that causes an analog switch S2 to close, thereby connecting the GL capacitor to the typical photo-muter.

3. 4. It will be appraised that the charge that takes place through the element of the resistor RL, at the moment in which the switch 32 is closed, that is, after the inspection or exploration period, will only be due to the dispersion of ambient light. The GL condenser is now

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oarged to a voltage corresponding to the transmission of light amoiioite. This voltage is fed to your view at a sufficient differential amplifier AL which is discharged at the end of the next scanning or non-selection period. Therefore, the output of the differential amplifier AL is the line δ (f). It should be noted that Line 8 (f) is an indication signal coming from an acceptable bottle.

A variable elócrOs-a signal production network 61 is provided, comprising several variable resistor elements VD3_C VR-, VR5, ΫΗ6, VR7 and VR8 operatively connected to switches S3&gt; 84, S5,

S6, S7 and S8 respectively. This circuit is used to provide a 9 (d) variable power line for a specific type of container under inspection. Each of the switches S3 to S8 inclusive is a CMOS analog switch that is controlled by a simple R-3 bledtable oscillator and an adjustable delay circuit by pulses derived from photos 45 · Line 9 (d) is cemented through an oondensator C3 and a resistance element R3, used to elunar tran ^: Ltirioe de oonmtaoión phenomena. Line 9 (d) is connected to a Side 63 of a DI diode and a variable amp A3. The inspaoolon line 8 (í) is fed through a resistance element R2 to the other side 62 of the DI diode.

When the voltage line set at 62 is more negative than the voltage line transmitted at 63, the voltage at 62 is set to the potential of the voltage at 63 · Consequently, the volt of the preceding line

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of the amplifier «αρΜ ^ ο? of unit gain A2 is found dammed by wave 9 (d).

However, when an unacceptable container is scanned, it is flawed! produced through the resistance element K2 and therefore at 62 will be the waveform (a). Bata foraa of wave 9 (a) will ensure that twice during the inspection or exploration signal point 62 is not fixed to the potential of point 63 and therefore the wave 9 (a) asrara transmitted it. gives unit gain amp A2 and from date input a differential amplifier A3. The other input of the A3 diferonial amplifier is fed with waveform 9 (d). ^ ft, the line production of the differential amputee A3 sord of the waveform

9 (e) that it will be added to the element of resistance R4.

. Therefore, during the actual period of exploration, production will come from this ampouler A3 oonaiete drioameate in a pair of folta pulse signals on a baseline of voltale oero. This 9 (e) ace signal in turn assigns an indo 70 to another diode B2 and a s. Fixation of the wave to a Croatian wave 9 (f) wave · This wave 9 (f) wave is fed to its view by a non-reversing amphifter 6e Ah whose gain is fixed by radio resistance elements R6 and R5 to provide a solid signal of waveform (β) that is boosted to a point ai. In this foraa do realisaoión of the invention the sofía of solida ss de 15

.. \ volts and the value. minimum usable of one input pUsao ^ dn. The fault signal is approx. 0.25.

Referring to stages 6 and 10, the fishing line

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O - 21 start of exjPLoraoidn SP! and the end of explore oifo SP2 are attached to a 731 bieetable oscillator to form a wave path, namely a puLeaoi &lt;Xi of exploraoidn weight SP3 added to * aoo 1 ·

Still referring to lae fige. 6 and 10, a puLaoon of transverse oom.enao SPL is fed from the simoronization unit 69, oomo puLsaoidn transverse extoema TP2, to an unstable bear 772. The prodacoion ae! bieetable oooiler 772, flavored, one pulsing TP6 cross pitch, is fed to the Gl pitch.

I will note that the pulsation of trans vex * s £ aL T3PL pulsation does not occur immediately, but one or more preliminary exploration operations may be carried out on the bottle 27. This is why a smear ooration is required, as eeribirú later. 'The Gl deposit then feeds a record of growth of oinoo phases oonweaoicmaL 71. that a vu vas feeds a Giroulto de control de reobaso aonvoxoioiuaL 72, whose output is ooneoted at the middle of reohaeam. ^ 'to. The 69 tarbion einoronization unit adds a control signal to the register of oinoo fasse 71 haoidndcl.e fanoionado. In this way, the sanitizer unit feeds a signal TF4 that activates the rejection control circuit 72 at the correct point in time and then sends the signal. TP5 that fixes the reohazo control circuit 72 again. It will be appreciated that the passage Gl does not bind unless there are three signals on the limb, namely 9 (g), S? 3 and TP6. Then an oe will be added! &gt;

foL deede c &lt;1 step G!_; to the change register of cinoo phases

- 22 3210 which, in turn, will feed a signal to the rejection control circuit 72 «which will not work until the TP4 synchronous pulse is re-released, thus maintaining a correct 3 in oronization.

When the color density and / or the wall thickness of the transient packages vary significantly from one package to another, for example, as not illustrated by Waveforms 8 (g), it is necessary to make some orions. Basically, it will be approved that the inspection signal or the pending pending acceptance seftd must be altered to an appropriate signal value in order to maintain a desired coefficient between the inapplication signal and the acceptance signal. In other words, if the absolute value of the exploration or inspection signal is doubled, it is neoeeario either to start with La m.tad this absolute value of Inapeoolon sofüd or alternatively to double the absolute value of the exploration signal. ¹

Referring to fig. 7 »an auxiliary control circuit inserted between Lios points 64 and 65 of the circuit of fig. 3 · A control request SPo ooinoidento is developed with the pDsaoiór de coMenso de exploraoión SPL. See fig. 8 (h). The pulsation \

SPC is fed to a peak detector 73 comprising an analog switch per S9 and S1O and a C9 capacitor. The pulsation SP6 closes the analog switch S9 causing the capacitor 09 to be discharged, see fig. 8 (k). The SP6 request is also boosted to a DL4 delay organ. The SP7 output pulse from the 'Deaora organ DL4 closes the S1O switch, see

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fig. 8 (j). Xa signal from the differential amplifier Al is now fed from point 64 to discharge the capacitor 09 as illustrated in fig.

(k). In fig. 8 (g) the 'continuous trace' Itoea indicates the absolute value of the signal voltage S (g) aligned side starting from the differential amplifier AL. In order to ensure correct communication with the signal of acceptance, it is necessary to extend the inspection signal to that represented by the lines. Therefore, at the particular point in time the voltage applied to capacitor C9 is voltage V2, and # 8 needs to amp this voltage to voltage V3. It will be appreciated that the DL4 deaerage dies while the capacitor 09 ion aoolon is produced, it brings an appropriate time to place the test point in a vertical posmon eel ^ e ^ í ^ G ^ i ^ t ^ ta ^ da on the container which is being exploited: ιoroC &lt;ó &amp; - the control button SP6 is also fed through. of a unstable PP3 to make the interstitial SU and SIg join with pociols or with poles Jg, thus promoting this circuit? The main control circuit, the detector circuit or tip 73, feeds the capacitor 09 signal to an amplifier with variable gain A6, which in its turn feeds a CKL ovenvenonal commperator fixed to a suitable revealing voltage, for example 10 volts. the 5P7 control pulley is also fed through another delay organ Dx5 to a PF4 detachable oscillator. The bistable PP4 oscillator feeds a chronometer gen oonvingittúL 001 the oual to its path feeds an oadena tri v,, \

«T *

3¾ of divider counters, generally indicated by reference number 74 of conventional construction, including YB5, FF6 and PP7 flip flop and a deoen &amp; * io CU counter operating in a predetermined sequence. The array of divider counters 74 powers a series of analog switches S14, S15, and Sl £ which are part of the gain circuit of the A6 variable gantry amp.

It's the course of operation, the signal. pro10. The output of the 09 Condenser is fed to the AC Variable Gain Amp and brings a convenient dome to work. The oaaena of divider counters has / is changing in value. The Garanoia of the A6 Variable Gain Amp. This caused the V2 voltage to be deoir, the output voltage of the C9 capacitor to vary up to a value exceeding the base voltage of the CP1 oomiator when the date is separated. By praying the voltage V2 is expanded to the voltage V3, that is, slightly by the DCOM reference voltage of the OOM20 stop 0P1, this triggers the timer generator.

This tripping action ma has the SU, S12, and 313 switches at the desired setting to hold the gain of the variable gain amplifier A6 at this point, which makes the ¥ 2 voltage amp sufficient to drive the CPL comparator. Finally and the signal from the CO comparator. It is added to the FP3 flip-flop by ensuring that the SU and S12 switches are switched to their original position! to. Bésioauente, there is now a)

-25V amplifier circuit between points 64 and 65.

It will be seen that the TPX transverse outlet organ (see Fig. 10) is not associated until some time after the first signal for SP1 scanning compensation. Consequently, the transverse weight pUaaoidn. TP6 is not fed to step 01 during for some time after the start of piuLsaoidn SP6. In this way, the rejection of the device is included during this initial period.

It will be appreciated that the gain of the A6 Variable Gain AmpHficator has now been arranged to ensure that the output signal »that is» the differential signaling of the a ^ pH ^^ i ^ ca ^ dor differential AL has been increased in order to making sure the voltage is above a preset value. This action is repeated as each of the packages enters the inspection zone, thus ensuring that the voltage of the inspection or exploration signal at the βoαCoxαdc of each package is adjusted to a predetermined value. This is why you use the same signal from aephedon to Jesar for variations in light transmission through different packages due to differences in color density and wall grit.

If by any reason this test signal were to be made in fact with a darkening or cracking in the enwase, the counter 0Γ1 is danced arranged in such a way that after computing the service it automatically sets the PP3 oscillators again,

PP4, PP5&gt; PP6 and E ^ thus returning the A6 variable gain ampX to unitary gamrnoia and closing 26 X

2 (/ sjxnatáaeamente switches SU and S12. Therefore, when this, non-extended signal is fed from the variable gain arnpPifier Al, functioned the control circuit of fig. 6 rejecting the envide ·

In the embodiment of fig. 7 »The Variable Gain Amp Amp A6 is available to provide a 50 discontinuous phase 4 phase motor gain of £ 1 with CF operating at 10 volts. Therefore, a signal between 2.5 volts and 10 volts fed from the variable gain amplifier Al can be manipulated by the contool circuit. Thus, the present circuit can handle variations from 2.5 to * 10 volts in 50 phases, that is, you can adjust 0.15 volt variations in the s &amp; Sal of inspecoion ·

A variation ? The high level of wall thickness or odor density can be defined as the variation that would eventually have an unacceptable container rejected for no reason other than the transmission of light through! The container was too loose because of this variation, or that a crack or slowing in a non-acceptable container might not be noted because the average transmission of lus through the container was too high.

It is envisaged that even the sorite apparatus in the above embodiment provides an intermittent lus ray adapted to explore vertically and horizontally in the area of ​​inepecosion the invention may be attached to an apparatus in the lus beam, and ·.

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Flashing ast6 adapted for vertical azploraoidn tinisa, BOlte.

At the realization stage it is distorted and integrated, its aerodynamic used when changing the color density 7/0 wall thickness with respect to translucent containers and they vary significantly from one to the other, the test sample channel altered by a joint factor. It will be appreciated how memorabilia to burst the oponpondent silk of apposition would put on. sor altered by a factor of adjustment in order to Matenar a desired co-sufferer against the silk of inspa¿on and the sadAL of acceptance. It was also appreciated that even if the ambient light fud made on the insodon silk would place its area equally well on the supply silk, and this would achieve the light of the ambient light silk by adding a Therefore, during the period of the ambient light.

For ot * a peurte, it is ap ^ oiAid that the size of re &amp;

The radon described antarlornsnta as simply joins in the desired area the present invention. HesuLtorá is immediately evident to experts in the field - that they can be put into practice in many other ways by using the present invention without contributing to the end of · asm ».