DE1635796A1 - Device for removing the resulting fiber fluff on knitting machines, especially circular knitting machines - Google Patents

Description

1035796 Patent Attorneys Dipl.-Ing. W. Scherrmann Dr.-Ing. R. Rager

73 Esslingen (Neckar), Fabrfkstrafle 9, PO Box 348

July 1967

Stuttgart (0711) 356539

Telegrams patent protection Esslingenneckar

Fouquet-Werk Frauz & PIaRCk ₁ 7 * tQ7 Rottenburg: (Ii eck ar.). Device for removing the resulting fiber fluff

on knitting machines, especially Rundstrickma machines

The F.rfindung relates to a device for removing the accruing fiber fluff on knitting machines, in particular circular knitting machines, by means of blown air, which is close to the Work places of the machine from along the circumference of the needle contours evenly distributed, facing upwards Blower nozzle emerges.

The formation and deposition of fluff on knitting machines is a problem that has an unfavorable effect on both the quality of the goods produced and the proper functioning of the machine. Especially with weak processing rotated and poor yarn qualities have the loose F.inzelfäserchen of the yarn, the tendency of dom ^T \ r> .serverband extract. There are fluff balls that are carried away and entangled by Z <? It from time to time, vr?.: S leads to defects in the goods. On the other hand, through the riauraablaFerunf- on the mesh-forming organs with the ZoIf; a jamming of these organs occur what

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The result is needle breakage or other malfunctions.

To remove the resulting fiber fluff it is necessary to use blown air which is directed from blow nozzles to the endangered knitting points and which has the task of: Blowing Paserflaura away from the machine. With regard to the most appropriate arrangement of the blower nozzles, many suggestions have been made. Are taken principle, a division into devices with stationary nozzles as they et via in British Patent ROI 690 as well as U.S. Pat ent writings 2357 71 ¹ I, are described in 2538 659 and 2846 ^ρ · 6θ, and in such devices, in which the nozzles are arranged circumferentially, as is known for example from the US Patent 2 422 51 ¹ J and 2 642, British Patent P07 O49 _# eggs German Patent No. 1 06I 943 and DAS 1 113 7 ^p. 6 Here it is also known to additionally have a stationary ·; Provide blow nozzles in order to achieve a more effective blow-off of the fluff at the knitting points and the thread guides »

Apart from the fact that the blow-off effect in some of the known devices mentioned is not fully ITaße is satisfactory, all these devices, bsi which the fiber fluff is blown away from the machine, have the? that the ase particles simply go into the rough air be transported by the machine. This means that the head the fiber approach from your room sorie the undesirable Fiber deposits in unfavorable places on the caterpillar, in the

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^"7 Is achine placed very large If for example, on a -..! achine in a knitting Seal, a clean white cloth processed while on a next to it." achine such r.lt a strong contrasting color, such as rct o ^ it is black, it is made, it looks the worst! There is also the fear that the substances will be mutually contaminated by small particles floating in the air, with the additional fact that such deposited asperic particles can practically, but not very much, be removed from the finished goods.

For this reason, attempts have already been made, one from the other To shield the machines by means of plastic hoods hanging from the ceiling, but it has to be done shown that apart from the awkward handling these hoods, because of the ones that are practically always present Gaps in areas of the floor cannot be completely remedied in this way. Next to it will these hoods or curtains hinder the accessibility of the machines while at the same time monitoring the machines is made more difficult.

For the same purpose it is also known to use the entire space between the "machine table" and the dial bearing The supporting spider on circular knitting machines can be shielded with transparent plastic segments in order to create a plaster fluff to prevent this space. However, these facilities have the disadvantage that they provide access to the

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hinder organs of lial formation, ~ - '

In addition, it is also known to remove the fluff by suction devices must be removed, as a rule from those provided on the machine or built into the machine Suction nozzles or suction funnels "exist. Such devices are for example in the French patent specification 1 023 846, the ÜS patent specification 1 752 207 and the German Patent 82,613 described. However, it has been shown that with circular knitting machines with high numbers of systems and large diameters there is no satisfactory defuzz can be achieved because an intense suction effect only in the immediate vicinity of the suction funnel or the Mouth of the suction tube is present, while on the other hand must naturally be prevented that the thread guide is adversely affected by excessive suction. Even hinders an arrangement of the suction pipes in the Ilähs Knitting points the accessibility to the knitting locks and thread guides, which in themselves come from the fluff and -deposits are hardest hit, but must be freely accessible. '. ■ "

The aim of the invention is based on this prior art to provide a device for removing the accumulating To create fiber fluff of the type mentioned at on the one hand an effective removal of the on the machine Accruing fiber fluff guaranteed and on the other hand a shielding of the knitting points of the machine against

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a fiber attack? or »an emergence of threads into them ambient air, is given.

For cli'eseiri purposes the device is according to the invention designed such that the blow nozzles below, the Workplaces of the machine open up and counteract them Above the Rlppsehloftplatte an all-round effect Air suction device is assigned, the to the Trick places "passed blown air after training an air supply in the. Air suction device enters.

The blown air that passes the knitted parts ensures, on the one hand, an effective prevention of the build-up of the resulting fiber fluff, while on the other hand the suction device immediately picks up and removes the fiber particles carried along by the blown air. At the same time, the air curtain that forms ensures a safe shielding of the machine. The new device makes it possible to remove parts of the fiber that have become detached practically at the location of their accumulation, so that they cannot enter the unbound air and thus also the risk of fiber attack, 9s if several people are working in a common Sfericks field If r ^T achines a I'lnimura reduced Moreover, the erfindunr.sg.enäße thought in simple structural ^one JeIse läP.t realize the ZugäncÜchkeit of snacking hilde administrative agencies is beeintrfichtir.t by the operator in any Heise.

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In the drawing are exemplary embodiments of the counter-. State of the invention · shown ». Show it:

1 shows a multi-system circular knitting machine with a ._. ■ retrofitted device according to the Er- ^ r; finding in perspective representation in the excerpt,

Pig. 2 a multi-system circular knit china with a built-in device according to the invention: In ^ perspective representation in the cutout,

Fig. 3 dis cylinder lock segments of the circular knitting machine after? 2 irr enlarged perspective illustration,

Fig ;. 4 shows a detail of the arrangement according to FIG. 3 in perspective representation .and in a different scale and -. -

5 shows an axial sectional illustration of a circular knitting machine with a modified device according to FIG of the invention in detail and in schematic Illustration.

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The basically built up in a manner known per se mehrsy st some circular knitting china has fixed Cylinder lock components U on that on a machine table 1 * 1 are arranged and. in a familiar way with the Cooperate cylinder needles. The dial lock segments are indicated at Uo; they sit, as is also known, at the Ptinpsohlenplatte Ul and work together with the dial needles. Me individual jobs on the machine are at 42 indicated.

In the embodiment according to FIG. 1, a nozzle ring 1 is arranged above the cylinder lock segments 6 which, for reasons of easier manufacture, consists of two mirror-inverted rings 11, 12, each provided with an annular groove, which delimit an annular channel 13 between them. The nozzle ring 1 is held by supports 2, which are attached to the armrest supports 3 of the machine, so that it is attached independently of the cylinder lock jacket. In this way, the cylinder lock segments U can be removed without further ado, without the nozzle ring 1 having to be removed or other changes having to be made. At the same time, it can be retrofitted to existing machines without difficulty.

The annular channel 13 formed in the nozzle ring 1 is standing "one or more air supply lines 5 with a compressed air source not shown in "connection

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From there, in the ring 12. Arranged nozzle bores 6 lead upwards, which are as close as possible to the cylinder needles with regard to the inner opening of the ring channel 13. The nozzle bores 6, from which the blown air exits, can be evenly distributed along the circumference of the Madelfonturen, but it is also possible, in places with particularly strong fluff, for example in the area of the thread guide ^! I3 to provide a larger number of nozzle bores, as illustrated at 6a. '

Above the dial Al is the nozzle bore opposite an air suction device · arranged, the has a suction plate 7, which in several places each with an inclined flange B and a hose 9 with a central Absaur.eeinrichturif not shown; is connected, The attachment of the Absaureteller 7 is done by on the underside of the not widely depicted arm crosses, which in the well-known Bears pointing dial lock drive.

The Absaucteller 7 is a hollow plate of essentially U-shaped cross section. He would like two each other oppositely arranged, essentially ring-shaped Wall parts 7a, 7b, which run over one another in a wedge shape are arranged and in the area of their outer edge a circumferential suction opening in Limit the shape of a gap 71. The upper wall

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part 7a protrudes, in the radial direction over the lower Wall part 7b before, so.d that the protruding part 7c a Baffle plate form * »:; = ■;

The blown air exiting from the nozzle bores: β is guided past the workplaces of the machine, where it entrains any pebble fluff that occurs there; it flows upwards and then hits the protruding part 7c of the deflector ¹ J _t, which forms a baffle plate. from where it is diverted into the suction gap 71, or it is directly sucked into the suction gap ^: 71-sucked, here the blown air forms in the area between the nozzle ring; 1 and the suction chamber 71: an "air curtain that shields the entire machine from the outside in this area." The fiber particles carried by the blown air are introduced directly into the suction chamber J and. of this; from over the; Lines 9 derived. Any touch of fiber coming from outside would affect the so. formed air curtain; meet : _t which one. Such an approaching paste would similarly convey into the suction gap. - \ - ^: / y ■ "";-; _ ■, '"■ .- /.;. ■ - .." ■■ --.-.

The upper wall 7a of the suction plate 7 is otherwise sloping upwards inwards so that the through the Part 7e acting as a baffle plate deflects air completely can enter the suction gap.

During In Plir. 1 illustrates a construction,

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in particular for subsequent attachment to already -. " ^: existing machines are set up, show the pig; · -. · ° · - 2 to l \ a construction that is already implemented during the manufacture of the machine. ■ * ';"' ^ · - "· ■

In this case, the blowing air is supplied by a®. ^7, "which ^:: with the not shown compressed air supply source is connected in incorporated into the machine table l ^l \ annular groove 19 and this compressed air

^ is applied. The individual cylinder lock segments have on their upper horizontal end face 16 an annular groove 16a into which a nozzle tube 17 is inserted -i ^; öt, which each has the length of a segment 4 and is closed at the ends. The nozzle pipes 17, in which the nozzle bores 6, 6a are contained, are connected in the region of their ends to the annular nipple 19 through channel bores 18 formed in the segments 4. While over the length of a segment 4, the airtight cover of the

b <annular groove is readily given, since the individual segments sit fully on the machine table: 1h , special sealing washers 20 are made in the area of the separating joints. an elastic material are provided which are inserted into respective trough-like cut-outs 25 of the machine table 14 (Fig. 4), and ^u an undesired air leakage preventing. The sealing washers 20 have a lengthwise length. · Form on; their thickness is greater than the depth of the milled recesses 25, so that when the cylinder lock segments 4 are screwed tight on the machine table l ^ f the sealing washers

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20 are pressed together and a perfect seal is achieved. The millings 25 extend """in the. Otherwise, not down to the bottom of the annular groove 19j, but rather they are at some distance from the bottom of the annular groove 19, as can be seen from _{Figure 4 4} uifl; to ensure that the air flow in the annular groove 19 is not impaired «

The connection of the ring groove -19 with the compressed air supply outlet happens through under the cylinder lock segments Lines opening into the ping groove 19, one of which at 19a is indicated.

The suction plate 70, which is basically in the same way as the suction plate 7 of the embodiment according to FIG. 1 is eusgebildet, is in this case directly iR ^v to the Rippscheibenantrieb shown not vielter female housing 72 is formed "The portions 70a, 70b and 70c corresponding to the parts 7a * 7b" 7c f of Absaugetellers. 7 during From sucking slit again at 71 is shown. :

In the embodiment according to Pig, 3 is basically the illustrated device shown in Pig «2, wherein only the blown air supply to the nozzle bores 6, 6a etvras is designed differently.

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The nozzle pipe 22 inserted into the annular groove 16a is connected at both ends by means of risers 23 to the air supply annular groove 19 in the machine table I ¹ J, whereby the riser pipes 23 are connected in areas of the sealing washers 20 according to the embodiment according to FIG. which have through openings 24 for this purpose. .

The embodiment according to FIG. 5 basically corresponds to that according to FIGS. 2 to 4, the air supply line to the annular groove 19 being illustrated at 29 and being otherwise connected to a connection line 28. In this embodiment, however, an additional precaution is taken to protect their most strongly fiber Direction. yarn knitting locks sufficiently from penetrating Plaun and to support the Vlirkung the air curtain these purposes are arrangements / un ö.en behind the knitting locks lying Raun additionally nit blowing air to provide that a lower pressure than the ^ from the nozzle tube 17 has emerging blown air and is therefore referred to as Ifiederdruckblasluft ν Per scgv Zylinderraun 31, which is the space between the needle cylinder 35 and the cylinder lock segments ¹ I ", in which the cylinder noble their associated Bet nit ätigungs or ganer, mobile ", are, is connected to a lüeder compressed air supply g 30 connected, -year on the other side of 39g. P.ipp-

"33 -"'.
. disc roughened ^ α. H. between the dial 36 and

the dial lock segments ¹ IO or the nipps.ehlo ^ r.cheibe. 'li

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Existing room, also -.ati an Iliederöruckb las air, supply 32 is connected. The murmur 31; and .33 cannot, for functional reasons, be completely sealed off. It is in them - an air pressure on the right - that the intruder. troublesome flaura fibers in oils knitted -: locks', ta essential prevented. The weak air currents emerging from the area of the pocket -.34. 37 are not torn by / the much more powerful blowing air jetsH from the nozzle pipe 17 and into the drinking gap 71. ίίι erb el · still support dan air vcrham;,. Eaten Ifirksarakeit .. is increased. .I> ier: af ^l na.hr.:e of the "ufuhrc'er / iisderdruckblasluft in the mentioned Us is e is particularly advantageous when in areas the r-lei.ch ^ n '■ "rccksripcinrl ^ rfllrte are used oils. a: Festirrfter. before. ^r asern and dust particles .not .be ^ i

fA ^ i ^ fciieriC of the 1st vcrbeschriebenen Ausführungsfornen at oen embodiment ^ hrunrsbeiapiel by Fi (r ,; 5 in übrigen- the track. lui'tabf hrunr ^ ^ us. Absaucteller the 70 fs such st old et. there ?, The PrnkrQU ζ support 3 is designed hollow, where; its interior space is a tubular part: 3't of the dr-B Oehöüsö 72 trarenden Artnkreuzes in connection, which is in the interior of the acid plate 70 Eincfet .:

As an acidification device "like" au'ch, for generation; the he. . ■ "" ■ Required blown air can be a known electric Steulinaup; & r are used j, in which on the one hand dle.auß dem Abcaui; t3llor 70 sb ^ sucked-dusty air-pi

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of a stump bag is filtered, while the compressed air leaving the vacuum cleaner is fed to the Düssnbohrun ^ en, ie used as blown air. The Ctaubsaucer can be operated in 'rest for separated or ^"1 It can be coupled to drive the !! achine.

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Claims (1)

Claims . 1. Device for removing the resulting fiber fluff on knitting machines, in particular circular knitting machines, by means of blown air, which emerges in the Mbe of Arbeitsstellen'der Ilaschlne from blowing nozzles distributed along the circumference of the Madelfonturen, upwardly directed, or by means of that the blowing nozzles (6, 6a ) below the work, the machine ends and an all-round effective air suction device (70, 71) is assigned to them perenoverlating above the Pippschlossplatte ( ¹ H) , and def the blown air fed to the knitting points after the formation of an air at the front - It enters the air suction device (70, 71). 2. Performing according to claim 1, characterized in that fa ⁰ ; the air nozzles (6, 6a) in an area outside the relief needles. 3. Vorrichtunr according to claim 1 or 2, characterized in that ' draws, dr-ß the air nozzles (6, 6a) unlelch ^ iaßi £ länrs d3s Umfanj-es the needle contours are distributed and in particular in areas of the thread guide (43) an increased Number of Elasdüsen (6a) is provided. Ί. Device according to one of the preceding claims, characterized in that the blow nozzles (6, 6a) in one, the Z: lndernadelkrans unrsbenden nozzle ring, (1) 10981S / 0245 - i6 -: "■" "" "" "" are formed, the at least one with compressed air has pressurized annular channel (13), from which the blow nozzles (6, 6a) in the immediate vicinity of the cylinder needle ring flow out. 5. Device according to one of claims 1 to 4, characterized in that the blow nozzles (6, 6a) are arranged in the areas of the upper end face (16) of the cylinder lock segments (U) and the cylinder lock segments (H) Iß devices (Iß, 23) for supplying the blowing nozzles (6, 6a) with compressed air from a common compressed air supply (19, 19a, 29). ■ 6. Apparatus according to claim 5 _t, characterized in that the cylinder lock segments (Ά) in the region of their upper end faces have an annular groove (l6a) into which a nozzle tube (17, 22) is inserted, which via compressed air supply ⁼ guide lines (IP, 23) with an annular groove - (19) arranged in the machine table (l ^ i) ^, which can be charged with compressed air and which is covered by the screwed-on cylinder lock segments (^). communicates. 7. Device according to claim 6, characterized in that the compressed air supply lines are designed as channels (I ⁰ O) incorporated in the cylinder lock segments (4) "■" ■ ■■■■■ "~. '. .. ϊ-635796. ■ 8. The device according to claim 6, characterized in that the annular groove (19) formed in the riaschinentlsch (14-) is covered in the region of the separating parts of adjacent cylinders s-chloÄ- segments ( ¹ I) by elastic elongated sealing washers (20), which in corresponding recesses (25) of the machine table (GJJ) sit and their underside is at some distance from the bottom of the annular groove (19). "..""" ■ -. '■■ · ■ ■ ι 9. Device: according to claim P, characterized in that * .da £ "the compressed air supply lines (18," 23) round through holes (2 ¹ I) in the "Dlentunr.splatten (20) in the annular groove (19) , 10. - "Device according to one of the preceding claims, in this way r.sker.notifies that the air extraction device: consists of a hollow air suction plate (7, 70), the has a substantially TJ-shaped cross section and • ■■ here are two spaced-apart annular disks 'Jandunren (7a, 7b, 70a, 70b), which in the area of their | outer bersmlun '··; a circumferential air suction slot (71) limit and between the at least one Luftabsau ^ e- leitunr (8, 9) raun de t. 11. The device according to claim 10, characterized in that ds " CHe upper rinp disk artery VJandunc- (7a» 70a \ des Lers ". (7, 70) in the radialc-r direction over the : z (71) protrudes and the protruding part (7c, 7Oe) for eil «? from the blow nozzles (6, 6a) koranenrto 10 9 8 19/0245 JUr BATH ORIGINAL Blown air into the air intake slot (71) diverting baffle plate forms. - 12. The device according to claim 10, characterized in that - That the air suction plate (70) directly into the Housing (72) containing dial drive is formed. '"" - ■ .- 13. Device according to claim 10, characterized .dadurch, W that at least the top wall (7a, 70a) of the Luftabsau £ - is plate (7, 70) arranged on the ITaschinenachse to obliquely upwards inclined. 14. The device according to claim 12, characterized in that the air discharge line runs in a hollow part (3 ^! 0 of the spider supporting the dial drive scvrie of the spider support (3). "- - Bt 154 device according to one of the preceding claims, characterized in that the cylinder space delimited by the needle cylinder (35) and the cylinder lock segments (4) and / or that of the dial (36) and the dial lock segments. share ( ¹ IO) limited rib space (33) are connected to compressed air supply devices (30, 32), which can pressurize the two spaces (31, 33) with compressed air, which has a lower pressure than that supplied to the blower nozzles (6, 6a) ^{e-air and the air currents (3 J} I, 37) exiting in the area of the trick points can be sucked in by the air suction device (70, 71) in cooperation with the air process. 1 098 1 9/0245 BATH ORIGINAL Blank page