DE3241154C2 - Warp knitting machine - Google Patents

Abstract

A warp knitting machine, in particular a Raschel machine, is provided with containment and knock-off sinkers which extend into the needle lanes and are arranged on at least one sinker bar, with which, through a control gear coupled to the sinker bar, a back and forth movement that is essentially transverse to the needle movement and coordinated with the needle movement between a locking position and a discount position can be issued. In order to achieve a high working speed of the machine with a simple structure with little stress on the warp threads, the arrangement is made in such a way that, starting from a fully retracted position, after laying the warp threads, they first perform an expulsion movement in the opposite direction to the drawing-in movement of the needles the course of which the loop formation of the warp threads takes place in the interaction between the needles and the sinkers, the sinkers also transitioning across the needles into the cut-off position and the sinkers then being moved back completely into their fully retracted position in a drawing-in movement in the same direction as the drawing-in movement of the needles before they are again transferred into their containment position across the needles.

Description

desha ,, a club,

? Ä ^h mäßt stress on the warp au, f hÄ

Relaxation of the newly formed thread loops around the so _{-called «KhnÄ}

a small way through the control transmission excluded 45 ^ J ^^ .J _erf ^g _indungsgem AESS overall characterized

Henden claims, characterized, gekennzeichne daEIsie II ^^ ^ Tmt complete in its fully eineine with the extracted product (22) zusammenw, - ^ ^ JW Fung _{werdenj before}

kende. elastic Warenspannungsausgle.chsvor- 50 ^^ S _m ^ _{6n needles} f _hre Einschließstellung

^r tTelSSmr _S ^S chine according to claim 5, characterized ühgWhrtwerden. Discount p.atines

characterized that the goods tension from ° ^ · ^^ Mung one of the needle movement

the same device (23) a rotatably mounted running of ^^^^^, ^ * ^ · L, Lr withdrawn goods (22) partially umschUingen ^ 55% *% *** ™ £ «£ _Beweg ungswe _g of Na-tensioning roller (25), which is correspondingly shorter through Federkaf transverse ™ f ^ ™ ^^, ^, which loads towards or against the direction of movement of the goods, st. yours and ^ ^r _hey 7 _A ^e _rbeitsgescn £ _indigke it the machine

As the goods lead when the needles are driven out of the

60 containment lugs of the containment and knock-off plate «

is kept stationary, are only relatively low

The invention applies a warp knitting machine with a take-off ^ - ^^ SS reaching into the needle lanes, on at least a few; e, - the Kettfade he JS _by ^ _{n a pull avoided} ner sinker bar arranged E. Subsequently- and off- ^ ^ f ξ _{the newly} formed stitches are knuckle-sinkers, which by em with the bar 65 J '™ j £ ^u " ^e ™ ^ _nsamcn vertical downward or coupled-in control gear a, m essential, transverse ^ e. of the gemems ^ _d ^ ^. ^ _{and b} .

ϊ ^^^^^ Xp, tLn ^g from _g e _form t, what just,., in the sense of

Reduction of the stress on the warp threads and the increase in the evenness of the goods are effective

To avoid the occurrence of tension spikes in the warp thread when swinging the pierced needles through the needle streets while thinking about the warp thread avoid, it is advisable that the arrangement is made in such a way that the plates (iiirch the control gear an increase in tension during the swinging of the perforated needles through the needle lanes in the warp threads counteracting small expulsion movement is issued, possibly with an equivalent small transverse movement of the sinkers is combined

The containment and knock-off sinkers can immediately follow the laying through the control gear the warp threads are moved back into their cut-off position. It is also beneficial if the needles are after knocking off the stitches while relaxing the newly formed thread loops by a small distance be driven out by the control gear, making the goods more even.

When designing the warp knitting machine as a Raschel machine With latch needles, there is no need for the comb and the milling sheet normally used in Raschel machines, which contributes to a simplification of the machine structure, whereby the sinker bar takes the place of the Comb bar occurs

The lifting of the goods during the expulsion movement in the opposite direction to the retraction movement of the needles the sinker causes a certain tension in the fabric, which is generally different from that of a knitted fabric existing inherent elasticity is absorbed. If this increase in voltage in sensitive or very dense goods are to be avoided, the arrangement can be made such that the warp knitting machine an elastic tension compensation device that interacts with the goods that have been withdrawn has, which in a preferred embodiment via a rotatably mounted, withdrawn from the Goods partially wrapped tension pulley has, which by spring force across or against the direction of travel of the goods is loaded.

The new warp knitting machine not only ensures safe work, but also excels by a better overview compared to known machines. In addition, it allows during all phases of movement through the aforementioned control bark of the containment and tee-off sinkers to largely achieve ideal thread tension ratios. This also allows different bindings, in which otherwise relatively high thread tension changes inevitably occur, produced more easily which in turn improves the operational reliability of the new warp knitting machine.

In the drawing is an embodiment of the subject of the invention shown. It shows

F i g. 1 shows a Raschel machine according to the invention, in detail, with a schematic illustration of the mesh-forming elements, in a side view in a simplified representation,

F i g. 2 to 6 the arrangement according to FIG. 1, with illustration different successive states during the loop forming process, respectively in a representation according to FIG. 1,

F i g. 7 a needle and two adjacent inclusions and sinkers of the warp knitting machine according to FIG. 2, in a view in the direction of the arrows VIl-VIl of fig. 2,

Fi g. 8 an enclosing and knock-off plate of the warp knitting machine, according to FIG. 1 in an enlarged side view, in detail

Fig. 9 the containment and knock-off plate according to F i g. 8, in perspective, in detail

F i g. 10 a containment and knockdown board for eiiie Warp knitting machine according to the invention, in a modified embodiment, in perspective Representation and in excerpt, and

11 shows the containment and knockdown board according to F i g. 10, in cooperation with a latch needle, in a side view and in a cutout

The warp knitting machine has at least one not shown, coupled to a control gear Needle bar on. poured into the latch needles 1 lying next to one another at a distance in the usual manner are, the needle shaft is shown at 2 while the needle tongue is denoted by 3 and the needle hook with 4 are. Between the individual latch needles 1, of which FIG. 1 through 6 each illustrate only one is each containment and tee sinkers 5 are arranged their shape in particular in particular from FIGS. 7 to 11 can be seen in two different embodiments. Any inclusion and sinker 5 has a sinker shaft 60 with which it can be inserted into a sinker bar, also not shown is cast in the appropriate storage in the machine frame and with the control gear the needle bar is coupled. The sinker bar and the needle bar can also have different control gears have, which are inevitably coupled to each other and thus form a common transmission.

Each of the containment and knockdown sinkers 5 is provided with a knockdown edge 6, a groove 7 and a nose 8 which limits the throat 7

In the illustrated embodiments, the containment and knockdown sinkers 5 with their sinker shafts 60 anchored in a sinker bar, which is located in the vicinity of the needle bar below the needle hook 4 is arranged. Alternatively, embodiments would also be conceivable in which the circuit board bar, based on Fig. 1 is provided to the right of the needle hook 4, so that the sinker shafts 60 extend approximately horizontally.

The needle bar is driven by its control gear in such a way that it catches the latch needles connected to it 1 one, based on F i g. 1, can give essentially vertical expulsion and retraction movement, as they are used to include the warp thread indicated at 9, 10 and the subsequent loop and loop formation is required. The warp threads 9, 10 are guided through perforated needles 11, which are indicated at 12 in FIG Guide rails are cast, in turn in the manner known from warp knitting machines are controlled that they the warp threads 9.10 of the respective Lay the thread system according to the respective weave.

The containment and cut-off sinkers 5 arranged between the latch needles 1 are in the machine frame in the longitudinal direction of the needle according to arrows 13, 14 of FIG. 2.5 and also in the cross direction of the needle according to the arrows 15, 16 of FIG. 1.2 movable stored. Your sinker bar can be moved by the associated control gear so that the inclusion and knock-off sinkers 5 both a back and forth movement coordinated with the needle movement between a containment position (FIG. 2) and a cut-off position (FIG. 1) as well as, starting from a fully retracted position shown in Fig. 1, 2

ment, a reciprocating motion in the direction of needle travel can perform.

For this purpose, the enclosing and knock-off sinkers 5 can either be arranged in two essentially at right angles to one another Intersecting directions be movable, or it is the arrangement made such that the sinkers a Can perform pivoting movement, the movement components in the two directions of movement mentioned Also results in combinations between a pivoting movement and a straight-line movement are conceivable.

In the case of the FIGS. 1 to 9, each containment and knockdown sinker 5 in the area of its nose 8 (cf. FIG. 9) on its upper side a strip-like or strip-like lateral widening on, as indicated at 17, on each of which a backing edge 18 is formed on both sides

As shown in FIG. 7, the widening 17 protrudes laterally so far over the containment and cut-off plate 5 before that it extends into the immediate vicinity of the respective adjacent needle shaft 2 and preferably touches this, in such a way that the backing edges 18 of adjacent containment and knock-off sinkers 5 each likewise in the immediate vicinity of the needle shaft 2, which is delimited in between and is delimited by parallel flanks lying or touching it. These receding edges 18 can also be designed to be resilient.

In the area in front of the throat 7, each of the containment and knock-off sinkers 5 contributes to a right angle the board running, from the actual knockdown edge 6 laterally protruding additional knockdown edge 19, which is part of one of the FIGS. 8, 9 shown way at this point arranged cut-off plate 20 The knock-off plate 20 can be formed in one piece from the material of the containment and knock-off sinkers 5 be formed; however, it can also be soldered on or cast on or fastened in some other way. In particular Fig.9 shows that following the additional knock-off edge 19 each of the containment and tee sinkers 5 is a partially formed by the tee sinker 20, has approximately arcuately curved support surface 21, which serves to support the goods formed, as will be explained in detail later.

The knock-off plates 20 of adjacent containment and knock-off sinkers 5 can each be in between Completely enclose latch needle 1 and connect directly to the adjacent board or these even touch, so that a continuous, essentially closed, over the length of the row of needles is formed Support surface 21 results

Alternatively, the arrangement could also be made such that the tee plate 20 on the inclusion and tee plate 5 is not placed on one side, but on both sides, in such a way that the additional cut-off edges 19 extend on both sides of the knockdown edge 6, so that the knockdown plates of adjacent inclusion and sinkers including the latch needle 1 in between in the immediate vicinity come to rest or touch each other.

The deduction of the in F i g. 1 at 22 indicated goods takes place via a conventional, not shown goods take-off device. In order to allow a limited, elastic compensatory movement of the goods 22 during withdrawal, the goods withdrawal path is between the row of needles and the haul-off device a fabric tension compensation device 23 is provided, which is a has two levers 24 rotatably mounted, tensioning roller 25 partially wrapped around by the withdrawn goods 22, the tension spring 26 fixedly anchored at one end via the lever pivotably mounted at 27 24 is loaded approximately transversely to the direction of travel of the goods. Instead, the goods could just as easily be with low tension be wound up so that it can yield for the compensatory movement.

The Raschel machine described so far works as follows:

In the basic position of the loop-forming elements illustrated in FIG. 1, the latch needles are 1 lowered with its needle bar. The containment and tee sinkers 5 are also at their deepest or fully retracted position. They also take - in the transverse to the latch needles 1 Direction - the cut-off position in which the goods 22 are released from the lugs 8 and the latch needles i with its rear side in the vicinity of the vertical surface extending from the additional knock-off edge 19 28 of the tee plates 20 of the containment and tee sinkers 50 extend against them Vertical surface 28 can also be supported laterally. The perforated needles 11 take approximately the one shown in FIG Middle position.

Starting from the basic position described, the containment and knockdown sinkers 5 are now in Horizontal direction, as in FIG. 1 indicated by the arrow 15 towards the latch needles 2 in the enclosed position transferred in which the goods 22 are held by the lugs 8 in the throats 7 of the sinkers.

Immediately thereafter, the push-out movement of the latch needles 2 begins, which is inserted into the position shown in FIG. 2 shown Can be transferred to the full extension position. With this budding movement the latch needles 2, the goods are held in place by the noses 8 of the enclosing and knock-off sinkers, so that it cannot be taken upstairs. The immediately next to the shafts 2 of the Latch needles 1 running back stripe edges 18 of the enclosing and knockdown sinkers 5 ensure this a sure slip back on the individual latch needle shafts 2 hanging stitches, so that even in the event that so-called single-needle fringes are made, a rising of the goods with the moving latch needles 1 is excluded

The perforated needle bars 12, and thus the perforated needles 11, are synchronized with the containment and cut-off sinkers 5 also executed a horizontal movement, once around the transition to the full extension position Latch needles 1 to make room, and on the other hand to keep the tension of the warp threads constant keep. This phase of movement of the perforated needles 11 is shown in FIG. 1 indicated by an arrow 30

Subsequently to this, in FIG. 2 state shown do the needle swing ?. 11 diirch the alleys the latch needles 2 through to the rear, as shown in FIG. 2 indicated by an arrow 31 is this movement lasts until the lure needles 11 in FIG. 3 take illustrated rear position.

During this swinging through of the perforated needles 11 and the warp thread systems 9,10 through the needle lanes lead the enclosing and knock-off sinkers 5 a small, upward movement indicated by the arrow 13 in FIG. 2 and a small horizontal movement combined therewith in the direction of arrow 16 of FIG. 2 towards the tee position. Combined with this little one Vertical and horizontal movement of the containment and knockdown sinkers 5 becomes the goods 22 inevitably taken along, the movement being directed so that it increases the voltage in the

7 8

Warp threads 9, 10 counteracts, which by the input so that the state according to Fig. 1 is reached again,

The oscillating movement of the perforated needles 11 would otherwise cause the next row of stitches in the starting point

would open. The warp threads 10 are therefore worked in the manner described by chip,

voltage peaks largely kept free. The product 22 is during the explained mesh formation

The perforated needle bars 12 now continuously carry out subsequent processes over a large area on the of the

ßend to the in F i g. 3 the state shown, the known support surface 21 of the containment and cut-off sinkers

te lateral offset movement, the warp threads 5 formed, extending over the entire row of needles.

9, 10 is supported according to the pattern on the individual needle shafts 2 kenden surface. The tension pulley 25 (Fig. 1)

be placed. This offset movement is shown in FIG. 3 prevents the goods 22 during the expulsion movement

indicated by an arrow 32. io of the containment and tee sinkers 5 excessively

This is followed by the swingback movement that is stretched.

Perforated needles 11, in which the perforated needles 11 in turn. The tensioning roller 25 can counteract the action of the tension

pass through the needle lanes and the warp thread spring 26 elastically yield to the side and thus the

the 9, 10 superior to the needle shafts 2 and shorten the path of the goods, so that the withdrawal tension

_ until the in Fig. 4 is reached. 15 remains constant.

The backward swinging movement of the perforated needles 11 is in an increase of the latch needles 2 could of course

F i g. 3 illustrated by an arrow 33. compound needles are also used, which then a

Now, based on the state according to the corresponding control mechanism for the slide

F i g. 4, the inclusion and cut-off sinkers 5 in Rieh- ber is to be assigned, as it is known per se.

direction of arrow 16 of FIG. 4 horizontally backwards in 20 to make sure that the needle tongues 3 during

their discount position transferred, in which the goods 22 from the basis of Fi g. 1, 2 illustrated expulsion

the lugs 8 is released and movement at the knockdown edges can not be slammed to the

6.19 is applied. Containment and knock-off sinkers 5 special precautionary

Either afterwards or already during these struggles. As shown in FIGS. 10, 11 too

See the horizontal return movement of the containment and cut-off plates, the containment and cut-off sinkers 5

Impact sinkers 5 lead the latch needles 1 after - those in Fig. 10, 11 for the sake of simplicity without the

downward pull-in movement, while the knock-off plate 20 are shown - behind the throat 7 |

Enclosing and knockdown sinkers 5 at the same time one of the one laterally protruding, the slamming of the |

Prevent needle movement of opposite, upward-pointing tongues 3 of the adjacent latch needle 1- jS§

perform th ejection movement, which is shown in FIG. 4 through 30 the tongue holding block 36, which is downwardly |]

an arrow 34 is indicated, while the beginning to curved wedge-shaped tapering surface 37 the each- $ j

Needle input drive movement veran- overlaps weils adjacent latch needle 2 by an arrow 35, as \ i

is clear. from Fig. 11 shows the tongue retaining block 36 can ■;

In the course of this movement in opposite directions, the joint is in one piece with the nose 8 or the widening 17

needles 1 and the containment and knock-off sinkers 5 35 close. It can also be "cast on" and made of a |

takes place in the interaction between the tongue names compared to the plate material soft dimensions

your 1 and the knock-off edges 6,19 of the containment and material, e.g. a plastic or lead, are made to (:;

Tee sinkers 5 in the usual way the loops - so that a gentle interaction with the emp- | ΐ

formation of the warp thread 9, 10, the newly formed sensitive needle tongues 3 to ensure. fj

Stitches first of all on the needle heads at each 40 The mode of operation of the tongue retaining block 37 is | f

applied closed needle tongue 3 and from these from FIG. 11 emerges. A slamming of the | can be seen

then be knocked off. Needle tongue 3 of the driven out latch needle 1 j |

The enclosing and knock-off sinkers 5 and the enclosures, as is sometimes the case with the so-called Ablee-H

Needles 1 now have the ones shown in FIG. 5 shown ren of the newly formed mesh can occur, d. H. in

Position reached in which the newly formed stitches 45 the moment in which the stitch the needle tongue 3

are already beaten. Now, starting out and the needle tongue 3 is thus tension-free,

from this position, the latch needles 1 and the one thing which can have the consequence that the needle tongue is elastic

closing and tee sinkers 5 - indicated by the snap forward and up

Arrows 14 and 35 of FIG. 5 - together vertically after

Moved down with the inclusion and tee 50 For this purpose 7 sheets of drawings

Remain 5 in the trigger position. The punch needles

11 assume a neutral position during this downward movement, in which they maintain a
favor constant warp thread tension. In these

Position according to FIG. 6 they are in the direction of arrow 55
16 of FIG. 5 transferred

In the aforementioned common vertical downward or retraction movement of the latch needles 1 and the
Enclosing and knockdown sinkers 5 are formed from the newly formed meshes
Pull speeds of the enclosing and knock-off sinkers 5 and latch needles 1 may be slightly different.

As well as the containment and tee sinkers 5 theirs

fully retracted position according to FIG. 6 reached 65
latch needles 1 go according to arrow 34
the F i g. 6 again slightly up to the new
to relax formed meshes.

Claims (1)

1 ^l an enclosure and a tee position as well as a _u Movement components parallel to the longitudinal needle Patent claims: is grantable in the case of which, starting from a full »■ * · o _lfl ._ ^ ι * ο y4 nn / lic I Acrpn πργ S ^ £ S3Ä Ä ^ KSSeSS ^ KÄ which ^g by a with the Η · * »^» * ^ z ^ amLacting between the needles and the Plati control ^{gear a ν} «βη ^ ^η . ^^ ₁ ^ ^Γ _(ί ^ - nen, with the sinkers also transversely directed to the delbewegung, transferred to the needle movement from NEN β _Absch l _a gstellung, tuned back and forth motion smear "" e to ^Na ^ _{d D} |. _{ps 6 36,605} known single-needle an enclosure and a tee position; and e ^ _g ^ ^e _{Kettenwirkmaschi} ne ne with these features motion component parallel to the needle barn Lang | ^ ^ _{the needle bar} each on direction is given, be, the ne. »** £ * ^, J ₅ patina or needle bar carrier levers arranged in a fully retracted position, then _{pivotable on} axially parallel shafts after the g ^^ The warp first create eine_der Emzugsbe "^ ™ ^^ _{needle bar with its} Nadelwegung the needles entgegengenchtete sprouting ^{ι ζ} £ _gerheb Pedal rigidly connected, sits the Platibewegung exporter in whose VerijjafdjjMkdto- bar" ^ ₁ ^ _{T WeUe> in the} p _latine formation of the warp thread ^u ~ ™ £ * ⁿ _w0 £ _ei jar carrier levers is rotatably mounted and which takes place via the needles and sinkers, with the _{lifting gear with the needle bar carrier levers also coupling} the sinkers across the needles in the 20 ^ _w ^ £ h ίhe . In this way it is achieved that the cut-off position is passed over, since you rc hge oe s s hf _{needle bar and the} nominal bar denotes that the issued Piamen? ^el ™ _e | _{move in a set} direction, whereby the (5) in a with the retraction movement of the needles (1) JJgJi _fe unidirectional draw-in movement ^d _{can be} . _{Since d} f _e sinker bar on constantly in its fully retracted SteUungzuruckbe 25 uc ^ ^ _Nadelbari. beln _entrager h _e be moved away before it is again _{coupled transversely to open Na ^ lau} L, the in needle longitudinal direction deii ^ inflwEh-dtoBrtell ^ Je ^ iJ ^ SSgSS ^ relative movement between the inclusion 2. Warp knitting machine according to claim l ,, flwrai Abschlaeplatinen e and the point needles through the gekennzeichnet.daßdenPlat.nenJSjdurchdasSteu- ^^ _e ^ _f ^ _ele ^ ^ ^ S _CHT possible, while Irgetriebe during the passage of the swing hole 30 HeMgetr "The" 88 _DJE relative movement needles (11) through the "** ^^ £%? ££ b'pw with RückL" towards the thread stress Increase in the tension in the warp thread (9, 10) opposite to the _{other side} . This means, among other things, that after the acting small Austnebsbewegui "erteiU is, the _A ™ J _{d mesh the Nade} l _n once again if necessary with a igJ ^ lÄrt 35 aisgetriSen, while at the same time the sinkers Cross movement of the sinkers (5) combined st * 6 needle movement again in the opposite direction