DE1535400A1 - Weft feed mechanism - Google Patents

Description

File number: r 15 55 4-00.4
Applicant. : Elitex ...
^ e in characters: 9861

3 chußf ad enz ubringme mechanism

The present invention relates to a weft feeding mechanism, which is firmly arranged on the machine frame of non-orthodox Yfebstühlen, where the introduction of the weft yarn into the weft insertion member state when the sley is in the front Reversal point is located, and where the entry of the Weft yarn in d &, s shed during the movement of the ¥ / eb-1ade runs from the anterior reversal point to the posterior one, with a needle-shaped feeder.

With non-orthodox looms it is common for that Weft yarn in the weft insertion member from the supply spool, which is outside the web faohes, and

009339/0203

outside of the sley on the frame of the machine, is introduced, namely by a feeder, which is either on the machine frame or on the feblade can be arranged. Basically, this has a feed mechanism the task of putting the yarn in a position to bring in which this from the weft entry gate can be caught, which is outside the shed in the starting position, which is for a further registration is prepared (German patent specification 500 148).

! all the sciiu ^ thread-feeding mechanism on the sley is attached, he can take the weft thread to the SchuJdeintragorgan bring the sley in any position, but usually it brings the weft thread to the insertion member during the sley movement from the front to the rear position of the sley movement, i.e. in the front or back dead center of the sley movement. This type has the 1-ö.ch.teil that the feed organ increases the inertial mass of the sley, which is extraordinary and is revealed to be very unfavorable, especially in the arrangement of a multi-color selector mechanism on this sley (German patent 836 324).

In order to obtain the inertial mass as small as possible, the Zubrin ^ .eiiiechanismus is mounted on dsm-fixed frame of the machine, in such a way that in order to _9. Bringing in the rear ukiceiir point of the sley koj & ut, this reversal point being for this purpose laterally the door and immediately after bringing the ssliu%; ferfies into the intragineaiiaai8ßiu. & Noch tm hlirtssea, tfmkGlwvnmit ier

INSPECTED

Load the borrowed entry of the entry organ in front of you, and thereby also the entry of the book thread on the other side of the box. This way of ochiiiifadeiizufarisierungs and -registration has the main advantage that in the rear turning point a long lifespan of the sley is assumed, which in the known looms of this type at least half, but also less than half the total length of the duration Working cycle and after finishing ui%; _ der jsiiiti-agbeweguJii; trollfunlctioiifeii the implementation of all ICON, v, ^T he example of control requires the öchußfadeneinlauf it. As a result of the large amount of time required for the sley in the rear reversal point, only the smaller rope of the duration of the working cycle remains to carry out the tersehifting of the yfeblade in the front liiiu.elirpunii.-t, the buffing of the sley and the liewegun ^ the tfelblade back to the rear reversal point The other thing, which is particularly unfavorable in the relation of the Echwaeaen Aneehlag, reveals the fact that on these weaving machines not very dense fabrics can be woven, as on aen ochützenwelistülilen.

In order to get rid of these w ^ Iiüteia i.celiteile and to get rid of the

ütandpumit des Irbelfezyj lus the v / eblade and the Web- f

technology äeoingiaa ^ .eii eu achieve that so far like lijöglici. the Bedii.?. approach lists of Lchiitzen looms, is on some T / ebm & Keiiiiien the spending of the SchuJ ^ - yarn in dafc ochuisfaaeneintragorgan in the phase of front umi: eiix 'points & the sley transferred, i.e.

in the period of time in which the V / eblade apparently located in xtuiie, this period of time

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BATH ORIGINAL

takes place when the direction of the sley movement changes and the actual entry of the weft insertion element takes place during the movement of the sley from the front to the rear reversal point, ie as in shuttle looms. In this procedure, the sley may be interrupted, ie without holding time both the front and in the rear reversal point in, which makes this operation of the Schützenwebetühle approaches, so ä _m j & B, it is possible to produce the same tissue range on these looms as the shuttle looms (Czechoslovak Patent 91,685).

However, up to now, weaving machines which work in this way have the disadvantage that the feed mechanism remains in the original feed position after the weft yarn has been inserted into the sole insertion element (see FIG. 3), which is calibrated must be before the stop position of the reed of the sley in Riohtung of the movement of the sley from the rear to the front reversal point. Bas has the consequence that during the movement of the batten from the front to the rear Uakehrpunkt in which it as already mentioned} turn submit comes, the weft insertion members of weft yarn from a Webfaohseite to the other _# which is to Sohußfadenbiegung between the weft feeder and the The weft insertion element for the edge warp threads comes at the point at which the fabric ends, whereby this point is shifted by the length of the material when the sley is moved from the front to the rear turning point,

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ORIGINAL INSPECTED

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namely from the attachment point in the direction of this sley movement, this bend of the to be entered, moving weft causes its harmful increased cattle stress and at the same time slows the insertion speed of the weft thread as well the speed of movement of the weft insertion member. It also comes about as a result of the friction to damage the edge warp threads by tarnishing. This fact is particularly evident when weaving with effect weft threads, where there is an increased tendency to shrinkage of the entry organ comes from what is caused by the irregularity this yarn is caused. When weaving with yarn made from synthetic fibers based on Egrlon or Silon This then leads to local heating of the edge warp threads as a result of the friction, which also causes them to burn through to Polge can have.

In the other type of weaving machine, in which the weft feeder is attached to the sley, this disadvantage of excessive stress on the selvedge does not occur, because the movement of the thread guide in the location of the weft feeder ensures that the inserted weft is always in a serade runs which does not touch the selvedge (franEöeieche latentsehrift 1 361 661), but the arrangement of the SehuBattbriageelemente on the sley has the flaobtei !, that thereby the weight of the sley is increased rather than increasing the inertia. With modern weaving machines, which should run as fast as possible, this is largely undesirable.

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ORiGlNALKiSFEGTED

The present invention is based on the object also in looms with a weft feed mechanism that is permanently mounted on the machine frame and in which the weft thread is transferred takes place in the front stop position in the brief moment in which the sley is in the front The turning point is to create a way to insert the weft thread without damaging the Yfebkante.

The essence of the present invention is that the weft feeder in a direction of movement the sley is stored extending I guide and for the duration of the entry of the weft yarn from the Feed position is displaceable in an advanced position, which is located in front of the pre-fabric.

? Thus, the excess soii eliminates © uer 5 of Sshußgarnee and Haaä & ettfäden λϊώ £ gleic5l ':. P \ DMG are the conditions of eigeiwliaiieii T: ii: -ireig M & AECS ächufieintrag organs as & uapcL verbesce ^?' _&:; ~; For c -I "be © linträgerergie sub ¹ equilateral J * 2? *; ielung böller he entry speed to ^ ring.

Y / other advantages and features of the present iärf I are from the following description as well as the enclosed can be seen in the drawings® which show the following $

1 - a scheme of anoriatuig des

ismus in eier Biniithruiigsotelluas ίπ Ακ ^ βί: _t in. which cas Webblcl ^: '(; ier l / eblade L's äaüi Schuieictra ^ Q- ^ isii in yqtüqt ^ s. um ^ t Weblade is, - ic

0Q8839 / 0202

Fig. 2 is a schematic elevational view of the same Mechanism at the moment in which the weft insertion process begins and the sley moves with the reed from the front to the rear reversal point, namely at the The fact that the weft feeder remains in the original feed position.

Fig. 3 is a plan diagram of the same mechanism under the same conditions as in Fig. 2, in which the weft thread bend is clearly visible, to which it is at a certain distance from the weft M

entry organ comes from the edge of the tissue, whereby this position is shown in dashed lines in the drawing.

Figure 4 is a schematic elevational view of the weft feeder, in from the feed position pushed out position in the direction of the sley movement with the reed from the front in the rear reversal point and at the beginning of the insertion movement of the weft insertion element with the sole thread.

Figure 5 is a schematic plan view of FIG Mechanism in FIG. 4 with two positions of the weft insertion member during weft insertion.

The weft feeder 1, which is a basically known one iiadelfora has an insertion loop on its end 2, through which the sole thread 3 runs, which with its one end into the tissue 4

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is woven in and is withdrawn with its second from a large cheese 5, which is on the machine frame outside of the shed 7 is located. The warp threads 6,6 », which form the shed 7 in a known manner, four which are guided in the usual way through the reed 8, which is mounted in the sley 9, which has a known swinging movement from the rear to the front Reversal point and executes back, being in the front Reversal point of the usual stop of the last weft thread on the G-ewebeende is carried out.

The insertion of the weft thread 3 into the shed is carried out in any known Y / eise by the weft insertion member 10, which is formed either by a known gripper or a Madel, which are provided with a known mechanism for taking and catching the weft thread, which is through the Feeder 1 is brought into the feed position A, which corresponds to the front stop position of the sley 9. In this stop position, which at the same time represents the position of the front reversal point of the sley 9, the speed of the movement of the sley 9 with the reed 8 is minimal and approaches the cooling value. In this working phase, the weft insertion member 10 is also in the position outside the shed 7.

The stop position of the device described is shown in fig. 1 shown, in wue icher purposes better Explanation of the further work phases the last weft thread with 11, the penultimate weft thread with 12 and some

009839/0203

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further weft threads with 13 »14.15 (Pig.3) denotes Bind, which form the precursor B during the working cycle that consists of Pig. 2 can be seen.

Before the sley 9 with the reed 8 reaches the mentioned front stop pitch (the front reversal point), the weft insertion element 1O has carried the last weft thread 11 through the shed 7, whereby it is simultaneously on the side of the machine outside of the shed 7 in the feed position k arrived in which the weft feeder 1 brings the weft yarn 3, one of which ito.de forms the penultimate weft thread 1 2 and the changed end of which is withdrawn from the cheese 5 in such a position in which the known collecting organ, not shown, the weft thread in any known way. After being caught in the tree, this weft yarn 3 is cut through between the weft feeder 1 and the fabric end 4 by a known mechanism, also not shown.

In the meantime the layman begins to work with the reed 8 | in sighting S ₁ (fig. 2) in Eiohtun | from the front to the rear Uakehrpunkt to move _t fob with the SohuJSfadenelntragorgan 10 receives the lintragiapule in any known way and the weft yarn J.iii Ιμ new »febfaeh 7, because» overkrfUfi arose »As soon as the reed ceases to act, loosen it the movement of the loom on the tc *, 4. in

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ORIGINAL INSPECTED

of the raw material in width B, which is shown in FIGS. 2 and 3 can be seen is coming.

Palis the Sehußfadenzubringer 1 would continue to linger in its feed position A, as is the case with the previously known methods for controlling the weft thread feeder 1, it would with the movement of the insertion member 1Ö through the shed 7 in the direction S ₂ to Pig. 3 come from the point marked with O until the end of the entire weft insertion process to the bending of the weft thread 3 around the edge of the fabric in point D, whereby the weft thread 3 would abrade itself in an unnecessary and harmful manner and at the same time damage the edge warp threads.

To avoid this, dee Weft feeder 1 this in a certain working phase of the masohine before the start of the weft insertion dee entry organs 10 in any he, well-known, not illustrated manner an axial advance movement in the direction S, issued, in which the guide opening 2 from the feeder position A to the pushed out position S, which is shown in fig. 4 and 5 is shown, in which ea the Sohußeintragorgan 10 is enabled, the Removal of the weft thread 3 from the cheese 5 in such Way to make that the Söhußgarnbahn 3 Bwiachtn the guide opening 2 and the shoe entry organ to always stays straight and no «touching the shoe arm comes up with the warp threads 6,6, auoh not old dea atweberand, so that no · eohadliohe bend «

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INSPECTED

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or friction of the weft yarn 3 around the fabric edge and thereby damage to the weft yarn and the edge warp threads is brought about (see in Pig. 5 both positions of the weft insertion member 10).

When the described weft entry of the weft entry organ 10 is ended, the shot feeder 1 returns from the pushed out position B into the feed position A back. During the mentioned entry, the sley 9 with the ¥ ebblatt 8 also gets into the rear Turning point and returns to the front turning point, in which the last weft thread to the end of the fabric is posted.

With the further movement of the sley 9 with the reed 8 the weft insertion follows from the other side of the loom in the same way as already described by a feed and weft insertion mechanism of the same type as that on the other side the loom is stored.

An embodiment of the device for performing this control of the weft feeder 1 is shown schematically in Pig. 4 shown. The weft feeding mechanism 1, which is guided in the guide 16 of the machine frame, is provided with the pin 17, which is shown in FIG the longitudinal groove 18 of the lever 19 is guided around the Pin 20 can be pivoted around in the machine frame is stored. The pivotable lever 19 is through a Nooke 21 controlled, which is rotatable with the shaft 22,

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OFnGlNAL INSPECTED

1535AOO

which acts on the shaft 23 of this lever 19. Of the Lever 19 is constantly pressed on the lock 21 by a tension spring 24 with its other end on the Machine frame is attached.

The shaft 22 rotates at half the speed of the Main shaft of the loom, which means that on each individual side of the loom of the weft feeder 1 from the feed position A into the pushed out position E is brought synchronously after every second stop of the sley 9.

This control of the weft feeder 1 can with Success also with the mechanism for multicolored weft change be used based on the principle of introducing all weft feeders for the one Colors or types of weft yarn in a single feed position works.

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00 9 8 39/0203

ORIGINAL

Claims (1)

Claim Weft feed mechanism which is fixedly mounted on the machine frame of non-orthodox looms, where the introduction of the sole yarn into the weft insertion member comes about when the sley is in the front turning point * and where the entry of the weft yarn into the weaving faoh during movement the sley runs from the front turning point to the back, with a needle-shaped sohuJB feeder, characterized, that the shot feeder (1) in a direction of Movement of the sley (9) stored calibrated extending guide is and for the duration of the registration of the Weft yarn (3) from the feeder division (A) into one advanced position (1) is displaceable, which see in front of the Toretoff (S). 009839/0203
New undertakings (* Λ7 §i α *> · .2 nm stt « 9 <h *** mm <m. V. 4. β.