DE1485499A1 - Method and machine for the production of tufted fabrics - Google Patents

Description

Method and machine for the production of tufted fabrics

The invention relates to a method and a machine for producing high and low cut tissues Loops within a row of loops in base fabrics, in particular an arrangement for a hook to carry out the procedure

It is already known to form high and low cut loops within a row by the Loops are held by the hook until a certain length of thread is fed to the needle, and that the Loops only then from a reciprocating knife be cut open. When optionally withdrawing the thread from the needle to reduce the loop height Means were required to reach the thread from remove the free end of the hook before cutting it open. In this way, the high loops were created with stitches normal thread length, and short loops by pulling back the thread

-2-

909829/0556

The invention has for its object to provide a hook with holders for the hook and devices to retract the thread cooperates in such a way that within a series of high and low cut loops are formed.

The invention is also intended to provide a special hook arrangement be created, which can be easily built into a conventional tufting machine and a control device has for the pattern, with the help of which the loading takes place at two speeds, so that high and low cut loops are created within a row.

A tufting machine for making high and low cut loops according to a certain pattern with a constant needle stroke and with "devices for feeding the thread after the needle with one of two Speeds depending on whether the loop previously formed should be high or low, as well as with a hook to grasp the loop formed by the needle and means -. : for cutting open the Schiaufea while it is being removed from the hook: is hold, is characterized according to the invention in that the hook has two hook parts which are arranged one below the other in a plane and are designed in such a way that when fed of the thread following the needle at the low of two speeds, the previously formed loop as a result of the tension lifted from the lower hook part and from the upper

909829/0556 bathroom original

j. Hook part is detected , on which it is aufgesohnitfen as a short loop, and that when the thread is fed at high speed, the loop already formed is held on the lower hook part and is opened as a long loop .

The erfindungsgemäase hook for a tufting machine featuring-B ei without t SiOH duroh has a einfuhrbare in a back-and herschwingenrle rod fork arranged two superimposed in the same direction extending hook parts such that the free end of the upper hook portion on the lower extends , and that spring elements are provided on one side of the lower hook part for releasably holding the loop formed around the lower hook part.

A particularly advantageous embodiment of a tufting machine According to the invention, means for sliding a base fabric in one direction, a needle for piercing into the base fabric, and a hook swinging back and forth, de ι invention must have a first and a second in _-? ichtuh £ the needle swinging back and forth and at a distance from each other has lying hook parts, the hook parts being opposite to the feed direction of the tissue, and on the Liège: .ur to and fro movement of both parts of the hook over

the present Naiel are Scklaufenknüpfstellung wherein the loop on the first hook part formed and detachable devices is held thereon by appropriate; also contains

909829/0556 -; -

BAD ORlGiNAL

the machine devices for the optional retraction of the thread of certain loops from the holders and for Applying to the free end of the second hook part, the thread feeding takes place in such a way that the loops in Towards the closed side of the lugs are movable, and two devices for cutting open all of the closed Loops formed on the sides of the first and second hook parts.

The invention is explained in more detail below with reference to the drawings} are shown in FIG

1 shows an end view of a tufting machine according to FIG Invention with a control device for the pattern or the thread feed on the right side of the Ma-Bohine,

Fig. 2 is a partially schematic plan view of a pattern controlled Thread feeding device,

Figure 3 is a partial perspective view of a preferred one. Embodiment of the inventive hook in which the Nadä. is shown in its working position shortly before a loop is formed,

FIG. 4 shows a section along line 4-4 from FIG. 3, FIG. 5 shows an end view in section and in an enlarged form Scale of the machine according to FIG. 1 from the opposite direction, in which a second working position is shown with the hook touching the needle,

909829/0556

B ¹ Xg. 6 one of the pig. 5 corresponding partial view, in which a third working position of the hook is shown, in which the loop is lifted from the lower part of the hook,

Fig. 7 is a view corresponding to FIG. 6, which shows a fourth working position in which the loop from lower hook part is removed and held in front of the upper hook part.

Fig. 1 is a cross-section through a tufting machine with several needles, which has a frame or a housing 10 with an Iragering 11, which controls the movement of the base fabric as it is fed from the front end of the machine to its rear end with the aid of a pair of fabric guide rollers 13 each the Jüingangsseite 14 and supported on the output side. The needle drive device includes a cross machine rotating shaft 15 which can be driven in any suitable manner. Between the ends of the shaft 15, a plurality of eccentrics 16, which are in effective connection with the connecting rods 17, are arranged in such a way that the push rods 18 and the needle bar 19 are moved to and fro. The needle bar carries several needles (-20) arranged in a row, which penetrate several times into the advancing tissue 12 and with each puncture one lying in the direction transverse to the tissue

/ form a row of stitches. The slotted needle plate 21 is arranged above the needle bed plate 11 and supports the base fabric 12, while the needles 20 penetrate the fabric in a reciprocating motion. This arrangement is known per se.

BATH ORIGINAL

909829/0556

- 6 -

The thread 25 is each needle through any suitable Thread guide fed, which can be controlled so that the individual threads the needles at different speeds are fed. Figures 1 and 2 show, for example, a known control device for the Pattern which has a fast or slow feeding of the thread 25. This control device for the pattern contains a pair of parallel and closely juxtaposed guide rollers 26 and 27, on each of which in the same Circular thread holders 28 and 29 made of friction material and arranged at a distance from one another are arranged. Any of these Thread holder grips a thread and guides it according to the speed of rotation of the guide roller which the bracket is arranged to. The thread holders 28 on the guide roller 26 lie with those of the guide roller 27 offset in such a way that each thread 25 passing between the rollers is gripped by one of the thread holders 28 or 29 and slides onto the surface of the opposite roller. The two spring guide rollers 26 or 27 are different Speed driven. The thread guide rollers 26 or 27 can be driven directly by a suitable power source, not shown, but it is also conceivable to provide a large gear 30 on the shaft of the guide roller 26, which engages in a smaller gear 31 arranged on the shaft of the guide roller 27, so that the rear guide roller27 rotates at a higher speed. This becomes a

- 7 909829/0556 ... ^ u

located in the bracket 28 of the front guide roller Thread 25 is fed in more slowly than a thread lying on the holder 29 of the rear guide roller.

In addition to the thread holders 2Θ and 29 for each thread is respectively a thread changing finger 32 rotatably arranged on a vertical spindle 33 above the rollers 26 and 27 is provided the thread is moved in the longitudinal direction on the guide rollers 26 and 27, so that each pair of adjacent Thread holders 28 and 29 from the corresponding Finger 32 fed thread 25 can take. The opposite end of the thread changer 32 is rotatable with the rod

34 connected to a soleonid 25, so that the rotary movement of the finger occurs when the soleonid 35 is excited or deflected.

Each solenoid 35 is separated by an electric line 36 controlled, which is connected to a finger'37 of a sample drum is. Each finger 37 reaches the rotating muste with the dumbbell drum 38 in contact as soon as it slides into a slot 39 of a lvluster template 40 and thus the circuit between a power source, not shown, and the respective solenoid

35 closes. If the finger 37 slides on the surface of the pattern

«Template 4 0, the contact is interrupted and the solenoid tr

37 abjure t and the thread changing finger J> 2 returns to its

ro return position. The pattern drum 38 is through a with to

^ a suitable, but not shown, power unit

y, associated gills 41 rotated. <vie eu Fiijur 2 clearly shows

»Lall. ^ I 'Fademvieiiüelfinger 32 seir.on iaead 2i on the thread holderunj 29 ui-r somv-ller rotating guide roller 27 as soon as the '.

- g - ■ BAD ORiGiNAL

't

- β - "V ^ vJ .:

Finger reaches 37 of the pattern drum with the surface of contact, wherein the solenoid is abferegt 35 «When engagement of the finger 37 in one slot 39 to Sohliejßung of the circuit to the solenoid 35 is retracted, the rod _34: such that the fadenweohsler 32 in the 2 is brought into the position shown in FIG. The thread of the slowly rotating roller 26 pulls thread from a previously formed loop and forms two. * V loops of the same size, which, however, are not so high, and the loops of the same size, which are formed by the rapidly rotating cover 27. . . ! .. _:

The invention also provides a gripper or hook 44 for each needle. The hook 44 includes a shank 45, which in '>''a reciprocate reciprocating hook rod 46 is "the hook bar 46 1st on a shaft 47 arranged transversely to the machine and is in a known manner to a device, not shown duroh reciprocated . The stick 45 is directed upwards and forms a first recess 48 (Fig. 5-7), from which a lower hook part 49 extends opposite to the direction of advance of the fabric. The hook part 49 extends from the recess 48 essentially normal to the axis of the shaft 45. The free end of the hook part 49, however, has a near top

JTO *
■ Eurüokfliveneten part 51 on.

Above and essentially parallel to the lower hook part 49, a second hook part or a nose 53 is provided, the

909829/0556 bad'orjginal

- 1 * 85499

■. ■ ■ · ■■

Aioh extends from the Aueaparung 54 in the same direction as the hook part 49 and in the same plane as the shaft 45 »The free bands of the upper nose 53 runs out in a near downward bent file 55, which over the free end 50 of the. lower hook part is enough.

On one side of the hook 44 is an elastic spring clip 57 provided, one end of which in the usual way on Sohaft is attached, for example by screw bolts or bolts 58. The essentially straight part 59 of the spring clip 57 is largely parallel and at a distance from the lower hook part 49 · The bracket 57 is then bent outwards from the hook 44 in a gentle curve 60 (FIGS. 3 and 4); another Curvature of the part 60 leads this in the direction of the hook part 49 around the needle path and forms a shield 61, which is directed upwards and engages in the free end 50 of the lower hook part 49. The spring clip 57 also has a part 62 to be widened near the outside, which diverges from the hook 44 and the shield 61 at such an angle that it

a needle 20! between the spring clip 57 on one side and the hook part 49 and 53 on the other hand upon movement of the hook 44 to grip one carried by the needle 20 Loop 67 is able to lead.

On the side of the hook opposite the spring clip 57 there is a knife holder 64 which is carried in a known manner Knife 63 is provided, the knife holder on a so-swinging Knife shaft 65 is arranged. The drive of the vibrating

909829/0556

BATH ORIGINAL '

·· - ίο -, \ '■ ■ U

Knife shaft 65 can be thru; any suitable device one. V Tufting machine done. The sea 63 stands with both Htkenteile 49 and 53 in the vicinity of the recesses assigned to them 48 and 54 in operative connection, similar to a usual knife of a hook for cutting the ego runs The knife 63 and the knife shaft 65 are, however, arranged in such a way that the knife in comparison to the usual knives, executes a stronger movement, so that loops held by the two hook parts 49 and 53 are cut open with one movement can be. The operation of the machine according to the invention It is as follows: When the motor, not shown, is operated, the fabric guide rollers 13 and 14, the main drive shaft 15, the thread guide rollers 26 and 27 and the sample drum 38 rotates simultaneously while the hook shaft 47 and the knife shaft 65 are simultaneously reciprocated and in work together in a coordinated egg rhythm.

When each needle 20 is pushed down through the base fabric 12,

the corresponding hook 44 and knife 63 in their outermost rearward position essentially according to Pig. 7 ge

Ϊ. · ■ ■

if the needle 20 penetrates its lowest position, and

the thread 25 through the base fabric 12 leads, the hook begins

ο 44 its movement in alignment with the front of the machine, co opposite to the direction of advance of the tissue, as shown in FIG. 3 ro

^φ ' and 4 can be seen. Another movement of the hook 44 forward ο '...

_w causes the rope 62 widening near the outside through the

m NaOH needle 20 moves outwardly wir4 so that the hook portions 49 and 53 β Zvi oh the needle 90 and "4a" l "s half the Sohlaufe 67 hindurch-

- 11 - 'V.

I- ^w - ^Λ " ^Λ ""'- ^

γ .1486 * 49

be guided. When the beacon parts 49 and 53 pass through the loop, the needle 20 penetrates the curved part 60 of the spring clip 57, which returns to its original position, the shield 61 resting against the hook part 49 according to FIG. As long as the hook 44 is in its foremost position, the needle 20 moves upwards and loosens the hook parts 49 and 53, while the part is as before on the hook part 49 and the loop 67 slides over the free end 50 of the the lower hook parts 49 when the hook 44 returns to its rearward position. During this process, the thread 25 is normally fed to the needle 20 or its corresponding thread holder 29 on the rapidly rotating roller 27 to form long loops. The further advance of the fabric 12 causes the long loops to move along the lower hook parts 49 in the direction of the recess 48 so that the loops are cut open by the reciprocating knife 63, and so the ^r aewtte 68 old

Form cut loopsSHWnt- ^ ·.

* j ■ ': ■■■

If only low, cut loops are to be formed in a certain row, the finger 37 of the illustration drum engages in a groove 39 of the template 40 in order to excite the solenoid 35 to close the circuit, so that the rod 34 and the finger 32 for thread shifting the line drawn in phantom in FIG Assume position and the thread 25 from the thread holder 29 to the adjacent holder 28 on the slowly rotating roller

'<* 6 is moved ..

ORIGINAL BATHROOM

909829/0556

_ 12 -

The thread 25 fed by the slowly rotating collector 26 is made by the withdrawn thread of the previously formed loop 67, which is still on the hook part 49 through the spring clip 57 is held, added. By withdrawing the thread from the previously formed loop 67, sufficient tension is created, to pull the loop 67 against the pointed end 50 and the shield 61 of the spring clip 59 from the hook part 49 according to FIG Fig. 6 to separate so that the loops 67 slide through between the hook part 49 and the bent spring clip 57. To

when the loop 67 is withdrawn from the lower hook part 49, it becomes the downwardly bent free end 55 of the upper nose detected and held as a short loop as shown in FIG. If the hook 44 then moves further backwards, the thread 25 becomes also claimed on Sug so that loop 67 is removable from lower hook portion 49; however, it is also conceivable that the B'eden retract from a stationary hook. With the advance of the fabric 12, the short ones on the upper hook part 53 held snnloUfen moved in the direction of the recess 54, wc open the loops of the reciprocating knife 63

with

cut v / earth and low a cut tissue Form loops 69.

The strength of the spring clip 57 is chosen such that duü. he η i 'only under the pressure of a withdrawn loop 67 or dor ι needle 20 bends. In this way, the feed number is optionally

of thread with different Seschwinuijkeit with the help of egg Lluat he control possible, so that in a .tie ine high and low cut loops 68 or. 69 arise. :; ie optionally S expensive.αϊ;. · '.er .leschv.'indi ^ keit n ^ -brer ^ -r? 3 ^f1c n 2 ^C;. ir. -in ^

i'ufting machine with several needles enables the production of a desired pattern with alternating high and low sea runs depending on the luster of the template 40.

In the machine according to the invention, any control device for the pattern or thread feed device can be used, which can be selectively operated to introduce individual threads at normal high speed and at a sufficiently low speed so that. ^1st the yarn and the loops OVERTIGHTEN back from the free end of the hook 49 and away the top-n H _(? kenteil 53 are held.

A conventional tufting machine with several Thread and hooks to cut the loops and with them work together:! en knives to form a cut open in accordance with the inventive level described above to modify; o that optionally parts of tissue rait aufeauhai within high and low levels after giving one certain pattern arise. For you? Changeover is merely The exchange of the usual hooks for the T-Iak η 44 and the Spring clip ^ 7 guui ^ yy υ.ei 'invention required at the same time Publication of a well-known control device for the lauster, VUit Ijilfe which the threads with two different threads

ο Schwind i V * ei tr η supplied; err «n can.

hin needles of an I ¹ Uj: 'Lingma. chine -erven preferably all with the ^^ M-fin.lun ^ jgemltGi-.en hook pass,; .bo that in every row high un6

cn rjx ^ ori -t; ^ cal; must be formed, but is'; it also possible just

a! - ', tine '! ηΊ-Ιι. ± \. ■ i.n '; Hi ro leb on to equip hooks, while Ii' .-. ::. hi'L: i-: ii, “\ i \; ηοπιΐ ··:; 1'.η Uaken provided / needles, loops

Form ί'1 'of the same height. EAD ORIGINAL

Claims (1)

Claims 1 · ") tufting Masohine for the production of high and low cut-S _c hlaufen in accordance with a particular pattern with a constant needle stroke and with devices for feed of the thread for a needle at one of two speeds, depending naohdem whether the loop previously formed high or should be low, as well as with a hook for gripping the loop formed by the needle and means for cutting open the loop as long as it is held by the hook, characterized in that the hook (44) has two hook parts (49 _f 53), which are designed in such a way that when the thread is fed near the needle at the low of two speeds, the previously formed loop (67) is lifted off the lower hook part (49) due to the tension and grasped by the upper hook part (53) , on which it is cut open as a short loop, and that when the thread (25) is fed in at high speed, the already formed The loop (67) on the lower hook part $ 49) is held and cut open as a long loop. 2 tufting machine according to claim 1, characterized in that that the hook (44) has a spring clip (57) connected to the lower hook part (49), 90 9 8 29/0556 the spring tension is so low that the thread (25) between the spring clip (57) and the lower hook part (49) Hindu is available as soon as the for the formation of a short loop (67) the required thread tension has been achieved, and that the tension of the spring clip (57) sufficient to wrap the thread (25) between the ak part (49) and to hold the bracket (57) when the thread tension is necessary for the formation of a short loop Height not reached. 3 · tufting masohine according to claims 1 and 2, daduroh characterized in that the free end of the upper hook part (53) extends beyond that of the lower hook part (49), and drops near the bottom in such a way that a loop (67) sliding off the free end of the lower hook part (49) can be seized 4 · Tufting Masohine naoh the claims 1-3, characterized in that the lower hook part (49) from its lower The edge is beveled upwards so that a loop to be shortened slips off the free end 5 · Tufting-Masohine naoh claim 2, characterized in that the spring clip (57) is substantially in the direction of the two hook parts (49) 53), and that the outer end of the bracket (57) for Füyfeung the needle between the The bracket and the hook parts are extended to the outside 909829/0656 6 tufting machine according to one of the preceding claims, characterized in that the device for cutting the loops comprises a single knife (63) at the movement of which the loops (67) located on both hook parts (49 * 53) are inseparable. 7. Tufting machine with means for advancing a base fabric in one direction, a needle for piercing the base fabric, a hook swinging back and forth, characterized in that the hook (44) has a first and a second in the direction of the back and forth swinging needle (20) and spaced apart hook parts (49 and 53), the hook parts (49, 53) being opposite to the feed direction of the tissue, and that means for moving both hook parts (49, 53) to and fro are present in the loop-tying position via the needle (20), the loop being formed on the first hook part (49) and detachably held thereon by suitable devices, and that furthermore a device for pulling back the thread (25) of certain loops (67) from the holders and for application to the free end of the second hook part (53), the tissue feed being carried out in such a way that the soles run in the direction of the g losed side of Hjakenteile (49,53) are movable, and that further comprises an apparatus for the cutting of all are at the closed angeorinet S _e-th of the first and second hook part (49, 53) formed loops (67), 909 8 29 / 0b56 8. Hooks for a tufting machine according to one or more of the preceding claims, characterized in that that it contains a fork (457) which can be inserted into a reciprocating rod (46), the two on top of one another arranged, extending in the same direction hook parts (49 »53), such that the free end of the upper Hook part (53) extends beyond that of the lower hook part (49), and that on one side of the lower hook part (49) Spring elements are provided for releasably holding the loop formed around the lower hook part (49) are ο 9 · Hook according to claim 8, characterized in that the spring element made of a U-shaped spring clip (57) consists, the lower member (59) is attached to the hook (44), and the upper member a transverse hu the hook parts (49,53) has lying üi-shaped parts (60,61), the outer edge of which presses against the lower hook part (49) 9Ü9829 / 0S56 Blank page