DE6600551U - NEEDLE BED FOR KNITTING MACHINES - Google Patents

Description

The invention relates to a known loading bed for Strickiaa machines, in particular a Sippscheibe for Sund knitting machines, with a tee canoe and a plurality of transversely milled narrow guide _v ; -tc; ^, in which individual, independent ^ i ^ e knitting needles are inserted in order to be able to carry out the longitudinal movements necessary for stitch formation as a result of the elasticity of the bed in relation to a suitably equipped needle lock. In the c-

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BCO-25-Ιι

The invention relates to means to prevent the premature wear of the base of the hat as a result of the abrasive action with the needle sliding back and forth, primarily at the open end of the xiuts au "iiuliCuuii Auöüiilä £ k; äiiiSi uea Kudulbii" · «tes.

As is well known, the rebukes of a knitting machine working in the needle bed step out of the needle bed for a certain time and by a given distance during the stitch formation process, so that its fore-end containing the hook and the tongue appears as an unguided prize winner. In Sund knitting machines, the needles of the dial, due to their horizontal position, carry the predominant rope of the knitting tension caused by the goods take-off, while only a relatively small percentage of this is taken over by the vertical cylinder needles. This results in the state of a side-loaded, free-floating beam and consequently also the corresponding Durchbie- C -xgs phenomenon. As can be seen, the amount of this depends on the one hand on the size of the knitted fabric pull-off force ... on the other hand on the moment of resistance of the 1 '.: ·. 1-shaft cross-section from _? by the lever arm of the bending

Kraft in all cases remains more or less the same ♦ In the production of ordinary Recht-r.ochts-Masc ^ ien it is comparatively small, since the padenschieixe hanging on joder Iladel and to be thrown to the formation of the isasohen ganä dense ara Absohlagkasm remains · With other types of knitting, on the other hand, and especially with toppings, saupes, etc. , assuming the bending force correspondingly more substantial fourth, Dex Yöiraerschaft d # r expelled ladel is therefore bent towards the bottom of the flute under the action of this force, whereby both here and during the subsequent retraction of the needle, however, the bent needle is strongly pressed onto the bottom of the river and mainly its outlet As a result of the innumerable repetitions of this process in an industrially used zten. For example, a lot of stony large circular knitting machines have the same effect in the long run as a bearing or cutting process, which results in the gradual formation of an ear or less pronounced incision

of the bottom of the groove. The finer the needle the greater the deflection and the more pronounced consequently also the sawing effect, "Diess unintentional Incisions carry the risk of injury and even shearing of the knitting thread, and in particular synthetic yarn in itself, making the outer edge of the sawn-in one more and more sharp-angled and therefore it turns out to be cutting.

Attempts have already been made to remedy this problem in various ways.

A known means consists in the intended bending of the pin hook away from the bottom of the hat in order to thereby to compensate for the throw-in bending that occurs during operation. However, this measure requires the opposite needle beds to be brought closer together, i.e. in dog knitting machines a lowering of the entire Hipp disk by the stitch length corresponding to the machine fineness to be maintained, which then e.g. in the latter stable of the Annular gap between the disc and cylinder is undesirably reduced. This has a detrimental effect on de; -. ; ': / 1-en Passage of the goods and consequently the flawless stitch formation the end.

Another well-known remedy is ..Ie

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Surface hardening of the milled pin bed, and z?: Ar by any suitable thermal, electrical, rather ^ lsciies or other process, by welchc-3 antwcdor the whole bed or just its wear and tear most exposed zone from the fact that the durability of the protective layer that can be achieved and consequently its continued effectiveness e.af cannot be guaranteed for a long time, this procedure still has the serious disadvantages of warping of the bed, especially with large Bippscheibec diameters, as well as a significant increase in the price of the finished piece.

Present: Invention avoids the mentioned disadvantages because that in the area of the greatest stress of the 2-minute reason, i.e. at its open exit end at the knockdown ridge of the needle bed, under the Badelschaft is deliberately created an air gap, which is caused by the pull-off force against the bottom The bent shaft allows free entry into a needle groove without touching the kit the groove base and the resulting Sinschneittv /. kung takes place. Said air gap can either ou-c ..

a eat spree loin recess of the groove base in the endangered zone, or by inserting a sole to the smooth continuous groove ^ fundamentally achieved v / ground, said sole not quite up goes to the outer edge of the Eadelbettes j but us the Säsge of gevnjmsekten air split it ends in a backward position. The attachment of this sole can be favored either by living or by some hf chanical holding method.

Some typical designs are shown in the drawing examples of the subject matter of the invention shown, namely is:

Pig. 1 is a vertical cross-section through the intact loop formation zone of the cylinder and the normal Dial of a circular knitting machine, with needles in rest position (lCatniQfleiohe);

2 shows a similar frame. but with expelled and bent downwards on the dial!

Pig. 3 shows an identical section with signs of wear on the base of the hat in the dial;

Pig. 3a shows a front view of the dial circumference in the direction of the arrow ^M A ^M from Pig. J> ;

Pig. 4 a cut-like Pig. 1, but with upturned! censures in the dial;

Pig. 5 the same, but with a milled air gap on the Hipp disc;

6 shows a cross section through the complete Eipp disc profile with glued-in flute base;

Pig. 7 like Pig, 6, but with a pinched sole;

Pig. 8 also like Pig. 6, but mix of clamped soles.

The two needle beds, namely the cylinder 1 and the dial 2 of a circular knitting machine are arranged at right angles to one another in a known manner and offset from one another in the circumferential direction so that the needle grooves la, 2a present in them are alternately spaced. The height position "a" of the dial relative to the cylinder can be adjusted as usual and depends on the type of gestrio produced. Depending on this result, for a given profile shape of the bß'ti'aohtetan nadelbett- zone a besfimmter annular gap ^rt p% through which the ⁿ Gestrioksohlauch produced by the needles 3, 4 E "is subtracted. The needles have the purpose of stitch formation

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known üaken 3a, 4a and the known tongue 3o, 4b and are in the "Xanna-same ⁿ position _> that is, not flush with the upper or lower edge of the needle beds goz-icime-t,

The bending effect of the C-eatrick tension aiii the 1 needles is due to Pig. 2 illustrates. in which the orj ^ ünjtigsi pail, that is, the sprouting of these needles, was appended to the cylinder needles after a four-way thread had previously been formed. The tension in the mesh "M", which goes to the limit of the tensile strength of the padan used, clearly affects the dial needles in the first place.

Pig. 3 and 3a show the destructive effect of the sawing process on the outlet of the Hutengrund, Han recognizes in particular from Pig. 3a two extremes of the incised groove profile, which can vary between a narrow channel 5 with parallel side edges and a wide, concave channel 5 ^1.

The curvature of the needle hook 4a 'naoh Pig. would in and of itself be a simple and effective antidote against the unwanted Uutengrund wear, would However, in addition to the already mentioned lowering of the dial, the replacement of all Hadeln one with gev / ör ^ " borrowed dial needles equipped machine require sdbsi

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in the case of just a single sawn-in tone iluto. In addition the curvature represents an additional operation in the needle exposure, v / oduroh the price of eoloher needles accordingly comes to stand higher.

Dio creation dos erfindungsgeaässen air gap 6 in the liutenauolauf under the front needle shaft fcrfolgt easiest and billi gaten gemäsa Pig * 5 _# Br obtained here without irgendv / elk additional Bearbuitungsoperationea or special use pieces by d sa the center of the Prase with which the in Pig. 5a at 2b, known widening of the needle groove 2a was cut, slightly shifted downwards in such a way that ^{the outer diameter 11} D "of the prese penetrates somewhat into the base of the mare and thus creates a wedge-shaped exception of depth 6a and length 6b. If you want to leave the remaining thickness of the edge of the pane unier the exception 6 at the original size, you have to increase the total ^{thickness n} e "accordingly, which results in a slight, but still quite acceptable, narrowing of the opening gap" p ^.

Another solution for creating the air gap

• fees 6 consists in inserting a thin flat wear-resistant Sole 7 (base) on the base of the groove as Pig. β - δ, whereby this web does not extend to the outer diameter the Hippschoibe is enough, but by about the length 6b away from it, one such thing stopped inside the groove Hard soles protect the whole bottom of the hat at the same time against wear and tear and can also be replaced if necessary,

The simplest form and the most convenient and cheapest way of testing such a thing in every needle groove is illustrated in FIG. 6. The sole is here from a smooth, flat, rod-shaped, hardened web 7, 'which at the desired distance 6b from the outer edge of the disc is glued to the bottom of the groove using one of the commercially available metal adhesives.

In another embodiment according to Pig 7, the flat sole 7 ^{1 is} bent at an angle at its inner end 7 ^f a, and the short sole legs obtained in this way are clamped in place by a suitable member, for example clamping piece 8 by means of screws 9.

Another BsiTestiguogsrariaste is is? Ig, 8 shown. Here the sole 7 "appears as either side

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with resilient hooks 7 "a, 7" b provided bracket 7 of them screwed ^u a in a circular bottom in the dial, the liutengrund by breaking column 2c and 7 b ⁿ behind the sloping edge 2d is eingohSngt.

Highly other possible, but not shown, types of fastening of the base webs are also al3 design variants of the subject matter of the invention described above au rights.

The above description refers to the details of the Hipp disc of a large circular knitting machine. The idea of the invention can, however, also be applied with a corresponding adaptation to the cylinder of such a machine, as well as to circular knitting machines in general. Perner, it can be used just as well with level doffer beds of I ¹ ax knitting machines of all iCypea.

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Claims (6)

1 «needle bed for knitting machines, with a knock-off comb tuid a Yielzahl from across Sciimal guide grooves for individual, mutually independent Knitting needles, which in it the longitudinal movements necessary for stitch formation due to Eelatiwer shift of the bed compared to a suitably designed loading lock, characterized in that that in order to avoid undesirable wear and tear on the bottom of the groove due to the needles moving back and forth, especially at the exit end of the grooves on the knock-off comb, in this zone and below the needles a smaller one Air gap (6) is left, which the free, contact- and consequently allows the needles to retract smoothly through the tensioned knitted fabric hanging therein Turned towards Eutengrund ». 2 _e needle bed according to claim 1 _? in that the air gap is created by milling a wedge-shaped - 12 - Preserved depression in the outlet zone of the Sutengrund is ο 3. needle bed according to claim 1, characterized in that that the air gap ends by inserting a thin one at a certain distance (whether) from the teeing karaa Grundsteges (7) is formed. 4. Needle bed according to claim 3, characterized by gekenraseichnet, that the base web (7) consists of a straight line There is wire, which is glued to the bottom of the groove. 5. The needle bed according to claim 3, characterized in that the G-round web (7 ¹ ) is bent at an angle at its inner end (7'a) and is featgekiemmt at a suitable plane of the set by means of the bent leg. 6. needle bed according to claim 3? characterized", that the G-round web (7 ") is designed as a KLaamer is whose resilient claws (7 "a, 7" b) in practical. shaped and arranged retaining edges are suspended. - 13 - 51