DE1435180A1 - Stopping device, especially for knitting machines - Google Patents

Description

Patent attorneys ^ '

LEO SCHMETZ MPL-SiS. BmUO SCHMET2 AACHEN

Heinrichsallee 2 A Λ ^ ^ i 1 8 Q

at KaiserplQfz I * K50 I öU

Telephon. 34731

Lawrence Creigh Ilokell in Ronceverte, West Virginia (V.St.A.) P at entanaieldung

"StilleetsTorriohtung, especially for active ·» and Striok-

wipe. "

The discovery looks like "I'm g * ns alIgeatin" ine StilleetsYorriohtuttg for StriokKasohinen, WlrJcsasohitt · » or the like. " and in "b" "ocd * r ·" ie "I directs to the sensing head το »fotoelelttrieob working StillnetiTorriohtun« · »for Textile knitting or knitted fabrics »especially warp knitted ■ aeohlaezt,» ie see p. jersey knit «a« ohlnen ·

In textile machines of the above kind , fabrics were advised to provide a still set orriohtung that would give a woohen or cause a bait if a fault appeared in the fabric. These errors are caused by "torn off" threads running out or by a broken ladle.

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Originally, these »purpose-serving SUIleetsvorrlohtungen are designed so that they are operated» when the thread running into the fabric breaks »and as a result they fail »if a material mistake out of any other örund when a »torn thread appears from dea ·

Recently, automatic stalls have been developed "using photoelectric cells" which repeatedly scan the width of the fabric, when this comes out of the knitting or the like machine, around the Check the fabric near the seat holder «u and at the same time to changes in light reflected from the fabric snsusprsohen.

With such an arrangement, the entire width of the fabric is coated tob dsr cell, and if an error occurs Any part of the fabric due to lack of thread or if another error occurs »alleviates the Inten *» slt & t of the tone dea fabric reflected and accordingly light falling into the photo cell and emits a signal » which amplifies and either sum stops the machine Or else "piss torrenting" can serve to generate a sound signal, which turn one of the photo ropes away, often causing defective parts of the worm or the like. as a result of the response of the photo-electric control unit to unsuccessful signals. Sole marriage unwanted signal

BATH ORIGINAL 809805/0905

_m « _mm

or operating the stop circuit of the machine • loh, for example, from electrical vibrations at « Starting and stopping other machines, including fluctuations in mains voltage, cyclical changes in the light flow the source of lighting that serves dasu, the light on the Align the substance from mechanical disturbances or vibrations ·]! and other reasons. In addition, it is often necessary to reorganize the photoelectric shutdown device, over the aging of the light source and the amplifier tubes Take into account, since this aging reduces the intensity of the » Liohtbügel directed towards the fabric and the effective effectiveness of the strengthening circle changed If, however, the sensitivity of the photoelectric Stilleet «- The direction of the gate is reduced so that it no longer responds to false signals, often resulting in a lack of silence setting for yarn broths or the like

Among other things, to remedy these disadvantages, photoelectric stillsetting devices have been used, old two photo cells, each of which has its own lens and an associated light source to illuminate the material. The photocells are arranged in a scanning head at a distance from one another along the scanning axis that extends across the substance to be tested, so that the photo cables respond to the light intensity on two sparks that lie at a distance on the scanning axis running across the substance. Di lotoiellem

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and is not one & vein- on the fcbtaatlinie or cross-.

line of the fabric »aageorta®t» around ü & n fabric Iu .; A bestlasmfcea Abs tang mn check that you arrive in the area of one of the photo areas. Me from the two s «ueferteB SÄgsj & le» erdeß © ine®? © retärk «rk?« Ie

the © @ built up, the © § d @ r 7®retärkey aaf den 0 & t @ rs & hie && ®r Sigaal © of the photo rope denies _e der öurefc Si «- Knd9raag ö © ^ ^ © 15 Stofif in the F @ t © 8ell« 5B

iron material errors. palpate slides «rird slttel © ei« ee circles obtained ^ laori © oils & t-rieefa «

hehmtroma ₉

because there are two photoselles and ifer «

Eat der -gleiehen Weis © feeeiaflusasii "With & noruw & ng ifis every rope .tatsSeallab as Eeau ^ points' other, so & ö ₉ © \ lang © fceide .Cells ir. 2 of the same influence be held

la bat sieve he spits. he / 5eb «n ^ 4s« ^ f-iae such still fateful days of the Virkstasehlne, the tos fi ^ rations and so & ^ anings 4 "e material iai area & ®r test area" originate, since the physical conditions of sedation, tait sselcher dl ''. photocells Uma their separate optical System® xuaHmnrengebrec-ht ~ s werg can,

The photocells do not allow the photocells to monitor areas that are sufficiently close to one another to eliminate the effects of fabric corrugations caused by vibrations and fluctuations in the fabric and on those of the fabric. the two Jo toseile "perceived Liohtintensitäten einwäkeiu .It has been found that the waves generated in the material as a result of sound fluctuations and vibrations have a Wellenspitzendistan" sound less ale 2 to 4 inches, so that in some one of the lotozellen fell to a · Chemical Pool responds in the area of a wave trough and the other photocell scans a surface in the area of a wave head. The difference in the light reflection intensity caused by this causes an indication of a non-existent error and therefore brings about an unnecessary shutdown of the machine.

Its further development is the result of an incorrect cancellation the knitting machine or the like. for this reason to avoid that a scanning device is provided which has an optical system with two lamps, from which light beams on the substance to be checked · sent, and the a the only optical lens system to pick up what is reflected from the fabric Has light and a semi-transparent reflector or other beam splitter for transmission part of the incident light along the Elnfallachee duroh this hinduoh and for the fieflektferen of the other part » of incident light along an axis which · essentially » is at right angles to the incidence ahee.

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Furthermore, in this device, a pair of photocells / star "- Shoo" arranged nan and reflected beams and a $ A @ r the photo * »durshgelass © that of the half & unshläasigen reflector ropes sugeordnete Mask © ¥ © rg @ s®h®n, gweläer in DI® Photo Sellen to examining separate \ ma distance from one another lying ©! ¹ substance laugh su restrict "DI® enough nahe.'beieinander lie @ a _s lam a wesentliehe Ändsrimg reflected to the two Potozellen light intensity due to Stoffwellungem Sat. -Yermelden “In practice, avoiding a springiness can be refl @ kt @ r to the two photocells at a relative intensity in the presence of Toa fabric waves dadwroh @ rrei @ kt.0 that the fabric läohea about half . Inch or less from each other © atf © rnt a "A masthead of this last-named. Everybody have an unmanageable size due to the hotsrandigkei * of the arrangement of the beam splitting , serving reflectors aowi © τοη provided with <ain @ r mask Fo tocells image of the two bundles of reflected Msht from d @ m Btrahl @ nt @ il @ rrefl @ ktor “They are also expensive to manufacture and difficult to maintain in a suvera algae setting.

One of the aims of the present solution is therefore to create a new, improved scanning head for standstill devices. easy to build and cheap to manufacture and the ae & © are adjacent. Surfaces of the knitted or knitted fabrics in a way

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senses, d & S a foot control <5 silence door direction « as a result, sound, vibrations or waves in the material eebloaaen iet.

A world-wide goal of the invention is creation of a new Abtaetkopfee for photoelectric ^ Stillsetsvor ~ directions for textile "knitting" or "knitting machines" * obei a color of photosell adjacent areas of the substances ftusgeeetst einl to use a single optical line ~ • yete »checks out and where the component» in suitable positions relative to one another duroh the arrangement a coapact and oinfaohea scanning head a fixed that is highly effective over a long period of time get rid of.

A further aim of the invention is to create a new head for photoelectrically "Etilisetsvorriobtung ^ n in textile knitting or knitting machines," if α "the one. Preamplifier and other electronic devices besides a "pair of photocells in the scanning case" order is to be sent to the inside of the low door, so that the possibility is reduced _t d &j; the readhead with the amplifier? ^! rkor connecting lines . take up.

Far "r" p M <"rkir.ale _e Eii.en0chi.ft0n and advantages ήβτ Br result in oioh au" Uüt the following E "scLr * ibung one

^BA0

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feeeoaders ew "ekaiäsalges Msfiitrungsfor der Verfindung eowl" SbxkI of the drawing, is shown

1 & inen- v $ yti & a.l «& &! Ng« @c; hnitt durofa de »invention * ges & a & en scanning head «iasir SHiXXsefczvorrieiitune;

2 © in © & u & el && nfä «3 * e®_seg« n · ferfpektivi © ck @ 'Earetel « the 86snptt © Il © this Abtaetkopf «®» Üeder—

the S ^ iebßwiag i @ t eise practical «-

with to be2®ielia © t is mnu © ia gessegenes G © iiäu3 © 1 ms® Äluffiiiiiisa - © dedgle to P © riB eines-in «ch UBtss of'f« B © n

with vertical «» - sides'12 iiaä Sndw ^ ndest 13 © @ wi® horizontal. BeeEwaad 14 ^ © sItat * B & a 8 © hi> tt © @ Tl

about 4 1/2 should be long, .3 should be wide and 3 should be high © @ ia. Sin © Bef8 £ ^r tigun &&<- «Yid: SefIeJitorplatte 15 is in Je © Seh'iuae angeoriiRst wrjrl bilüis a tra ^ er.de platform in. Distance above the XJrteriuntn the SeK.asö ©. for those of the scanning head, and they '«» ict a horizon & le «yoke 16 on, welcbe &" corresponds to the horisöjitalen Iiineniiyschnitt ciss tiad an ^ efcraite, on ^ rtK freri-chtete ochenl? ©! 17 to the fcege »t-fc *» rli «! gend« »sides e» to be attached to the power amplifiers 15 dea seh'nrses ilureh suitable «screws possessed * The plate 15 kar.n bei B.ii« la eise ö.uö rust-free

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Steel consist and your holder of a photo cell old an optical arrangement IB about in the middle between the Bnü- WHiQCien 30 um * (JeMueea iionen und ausaerdea "lsi Puar in longitudinal position TO" a - standing light sources 19 Jesus "which the photocell old the optical device 13 flank.

The light sources 19 »were designed identically and had a tubular shape · <Jlühbirnenf« esu »g 20.» which penetrates a corresponding opening 21 in the yoke IS of the plate 15. The socket 20 carries an annular ring flange 22 on its lower band, which engages the parts of the joint 16 giving the opening 21 and limits the upward movement of the façade. They betitüt rider a Qrupp * r n spring washers or the like "Π3 and" ine Very & ubnutter 24 _e 41 'placed on 4mm Aueeengewlnde the Paaaun ^ SO lst _t to disee relative to the plate 15 su attach "The PsesuEg 20 1st in the usual Heisa constructed "o-iAS ei · the Soekel the hlersugeordneten bulb 25 aufxunehisen verm & g and dftsu the übliöbeh Klearasenblook 26 slt I * ince" ng * n "for Terbindung of BattleVont ^ cts of the lamps 25 and KlexsioeTie <IFCR" uben * for mounting Her Stromaufübrung to the lines · Et «!« »pen 25 know examples. * lee have six light levels and light bulbs» with high thermal inertia «*», u »a sudden change in light output» to avoid changing the light tapping ·

ORIGINAL 809805/0905

The potoselle with the optical device 18 has a ear 27 carrying the lens 30 with an irnienbohruüf 28, and it runs out at its lower end in a molded lip 29 which forms a shoulder, which is along the lower end of the bore 28 extends and serves as a storage lens Jo »which is held by a! Lb @ r®inst @ olo? Ear 27a. Β Di © lins® 5 © can, for example, be double ^ convex. be Brennweit® and one tone from about 1 _o i / 3 $ © 11 at a Drueh "· knife τοη about 3/4 3oll © n _e aufwsis 1) 1® bore 28 of the iinse supporting tube 27 is in exact agreement with an opening 5t of the "Toohes 16 ύ @ τ Befeetigungs · und Eeflekt © r ~ platt® 15 ^ & 8 & ή? & - arranged ^ imd the tube 27 has a Halt® flange 52 at its upper end, which is drilled through to accommodate fastening ear tubes 33. Tertikai over the Jo 16 of the "BefeatiguKgs" and Heflektorplatt © 15 is a plastic Al) standl) l © ok 34 ₉ an Atsdeskplatta 35 and @ in Plaatik-cellii ^ block 36 attached «D @ r Äiietandblook 34» ftlt Deokplatt® 35 and the Sellesiblock 36 can each be about 1 * 1/2 "long and 1" wide The Abatandblook 34 has a central opening 37 * whose diameter exactly matches the bore 28 of the tube 27 carrying the lens and the opening 31 in The cell block 36 consists of a pair of elongated hollow spaces 38 and 39, which are arranged parallel to one another and along long vertical axes, and it has a suitable opening to accommodate a pair of cells 4 and 41 The exemplary embodiment described is the Durohiseeser of the housing bores 38

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and 39 t / 4 inches, and the bores are arranged in the center of the block> 6 with a distance of their centers from one another of 5/16 inches Synthane and the cover plate 35 inserted between them can consist of 64 inch metal sheet. The cover plate 35 i "t pass 42 and 43 for" ai light "durobtrittgöffnungea that beiepiels · e'e # Durohraesaer one of about 0.063 inch bed it sen UNAE their Äittelpunkte vm 5/16 inches apart eißis _s eodaS e'e exactly old centers the cell volume; .usebobrun # at 3?> uad in the cell bloc 56 substitutes. They PotoKirlXen 40 and in tone scaled-down shape, and in the case of the examples given, they are slightly cracked in shape with a diameter of three quarters of an inch. Suitable? Oto "rushes for tile" purpose are Clalrex CL-3 from Clairex Corporation, Bew Tork.

As calibration apparent from the drawing, the line pipe ωind 27 · the Abet ^ mdblook 34, the cover plate 35 and the cell block 36 vertically above one another uni opposite the di · opening 31 surrounding part of the Befeeti ^ un- and Heflektorpl & tte 15 arranged between the spacer block 34 and the Bsfestigungsi'l & nsch 3? the Lir.senrohrs iet turned 27 "and the Be t e> i jt _t -.ungöso grape 33 durcheetten the gunee Obörriln.> niierordnung dieaer Ülemente vertically and i * ind at its upper sin ttwrcto suitable cutters verechr & uht ·

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»12

The Fctosellen 4o and 41 are Bomiijparall sssuende and arranged parallel to the main axis of the lens 5o. The scanning head 1o is as usual. a transverse rail "so that it scans the width of the fabric in the transverse direction ₉ and at a height that its © Linae 30 is about ti 1/2 inch above the fabric" which is generally designated as 44 "The lens is in each case directed at two spaced a small distance portions of the substance 44, with 45 and 46. beg © iehnet sinfi ₉ and transmits the Lichtwert® on di © light @ mpfindliehen element © photocells 4o and 41 by the Liehtdurehtrittsöffnungsn 42 and 43 in the cover plate 35 * '.

As in Fig, 1 schematize !! is shown, the two photo cells 4o and 41 are connected to each other via a® I5o? olt direct current source © »One of the ropes is connected to the 47 with 4-150 ToIt _9, the other cell via line 48 to earth and a signal line 49 is the connection 5o swisohen the "two!» Otosellen connected. the circle connected by DAB via the line 49 signal controlled v / ith ₈ not forming part of the invention and therefore need not be described in detail "It is sufficient to note that the signals supplied by line 49 are fed to the control grid ßev first amplifier stage through a suitable (direct current blocking capacitor and a voltage distribution chain with a control potentiometer) in order to excite a heater which shuts down the machine when an error d? ts. from the pptisehen system of the "two photo line ·

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ο η ο ο _r> ι- I ο .π η r

recorded JeId runs through. By arranging the photocells in series, a simultaneous loss of light from both Potoaellea is compensated, whereas a successive loss of light of the same causes an inequality _? which causes the machine to come to a standstill. The photocells 4o and 41 are carefully selected by prior comparison of the amounts of current consumed by them and their gain factor, and cells of the greatest gain factor are preferably placed between the ground line 48 and the common line 5o, while weaker cells are preferably placed between the common line 5o and 15o Volt supply line

so
be arranged, ^ that the 10tocell system becomes stronger in a positive seal * This means that if there is a large gain in the photocell 41 between the signal line 49 and the primary line 48, the current fluctuation generates a positive signal in the first amplifier stage. The first amplifier stage, however, is so biased that it only excites the relay, which shuts down the circulating or knitting or the like machine, when negative signals are fed to it.

Jelbatverstänalicli iat the invention not to "the im Above described and in the drawings again- g & given details are limited, but are in contrast numerous amendments possible without this differ from the basic idea of the invention *

BATH ORIGINAL 809805/0905

Claims (3)

1) / shutdown device, in particular for textile machines or the like «with a scanning head _f which scans the width of a material © emerging from the machine and checks this and, if an error is displayed in the material, the machine stops, characterized in that the scanning head (10 ) has a lens (30) with a vertical optical ³ axis for producing an image of the fabric surface to be tested (44) and a pair of generally lateral spacing, parallel to the optical axis of the lens (30) and photocells arranged symmetrically to this and on its opposite sides (40, 41), which receive the light directly from the lens (30), because the lens (30) is adjusted to the photocells (40, 41) so that the lens (30) continues to sound in the ray path. a cover (55) with a pair of light passage openings (42, 45) is provided for the photocells (40, 41), which allow the passage of light to one of the photo cells (40, 41) and which are at a distance from one another enρ in order to supply the light to the photocells (40, 41), which is reflected from a small distance from one another but different limited zones (45, 46) of the material (44), and that one as a function of an imbalance in the through the two photocells (40, 41) of the adjacent fabric zones (45, 46) recorded light is provided for a shutdown circuit of the machine. ORIGINAL BATHROOM - 15 - 80980 5/0 905 2) Device according to claim 1, characterized in that that the scanning head (10) has a downwardly open box-shaped housing (11) with side and head walls {12,15) as well as with a support platform (15, 15) that has a © the interior of the housing at a distance above the lower end of its walls penetrating partition that forms roughly from the middle the support platform (15) a lens tube (27) with a lens (30) with a vertical optical axis at the lower end near the bottom that extends on the support platform (15) in a hanging arrangement a pair of light sources (1.9) is provided, which the inner tube (27) flank and illuminate the area to be tested of the substance (44) so that the photocells (40, 41) are cylindrical are as well as such above the lens (30) in the housing (f1 <sit that the light from the lens (3Q) from them at the same time and is received immediately, and that the cover (35) is attached to the platform (15). 3) Device according to claim 1 and 2, characterized in that that the support platform (15) in the housing (11) forms a waiting opening and an upper chamber and openings (31) for receiving the lens tube (27) and the light source (19) has that the platform (15) carries a spacer block (34) within the chamber, which one with. the opening (37) aligned with the bore (27a) of the lens tube (27) possessed that the cover plate (35) above the spacer block (34) with the light passage openings (42, 43) rests and that over - 16 - BATH ORIGINAL ο ο λ ο r »* · t ^λ *» · ~ - - te- 143518G- the cover plate (35) a cell block (56) with a pair of cylindrical and vertical bores (38, 39) parallel to the optical axis of the lens (30), which are used to accommodate the pair of photocells (4O ₉ 41). Aachen, the 29th quay 1961 3? Ür: Lawrence Oreigh Uickell, Ronceverte, ^ est Virginia (V.St.A.) The patent attorneys
by: (Dipl.- Ing »Bruno. Öchiuetz)