DE7001852U - MULTI-NEEDLE ARM SEWING MACHINE. - Google Patents

Description

INSTTSTHIE-WSBEE KAElSEUHE Corporation

75 Karlsruhe 1 SartenstraS 71

Multi-needle support arm - harrowing machine

The invention relates to a Mehraadeltragara-Eähmaechine with a one «23? gfih-r ictitn-ng Ma = -

for laying out a thread loop, in each of which an upper thread insert leading needles.

Multi-needle sewing machines are used to produce elastic hammers used in knitted, knitted or wounded goods, for example also for sewing on elastic waistbands. In the area . the seam connections may be made of such garments. Materials no significant impairment of the material's own elasticity occur. Significant goal exposure The presence of such a seam connection is essential both for great elasticity and for the proper formation of such a seam connection sufficient Uhterfadens, '' which by means of a clock

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the same with the sewing needles moving gripper in the form of an i

Thread loop is laid out under the throat plate, in which <

For the purpose of forming the seam, insert the needles that guide the upper threads!

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For laying out large padlocks. it usually requires relatively large gripper paths. With so-called support arm machines, a
special type of sewing machine type already mentioned , large Grei £ wege can not be realized because this led to undesirably large dimensions of the support arms.

Multi-needle arm sewing machines are used in particular to produce elastic seams in tubular garments, such as sleeves
or the like. The seam connections produced with such machines; fell short of the requirements of the relevant textile in- -. ' industry back. '

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machines have already been proposed to add an empty needle to the
to assign needles picked up on the needle bar to a needle holder. It is well known that such mehmed needle sewing machines »
The needles are arranged in a row approximately perpendicular to the direction of transport of the sewing material
Piercing of the sewing material for the purpose of forming a seam in the
thread loop laid out by the hook under the throat plate.

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When the looper returns, the thread loop is then underneath Attachment to the sighting of the reversal point of the hook tip ■ - ■ outside needle of the row of needles stretched, with which the lower thread length is fixed. In each of the already mentioned gate, the needle around which the thread loop is wrapped and tensioned does not lead an upper thread, so d & 3 for the slide «^ the seam a double the distance of this needle from the adjacent one, bart en, a needle leading to an upper thread, corresponding additional lines Bobbin thread length is available. . ^

If the already described assignment of an empty needle to the needles leading the thread material, the provision of a bobbin thread that meets the requirements! must be guaranteed, .-. but only up to limited falling speeds. When the sewing material is pierced, the needles heat up considerably, which can only be controlled with stitches of 4000 and more stitches per minute if the uoexxaaen xonxaaxeua, which is guided along the needles and through the same watch, is warm from the needles aen naaexa »u ± uilt« o · Needle leading the upper thread becomes proportionately . moderately short sewing times extremely hot. On the one hand, this double-handed approach stands for a high degree of suddenness. Sm Weg «and, on the other hand, largely excludes the use of machines with empty needles, at least for sewing material made of synthetic fibers, because temperatures up to above the melting point of the synthetic sewing material Ή-τ-η« · »« were adversely affected

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the use of empty needles the Vahtblld, since those of the Leexv needle Missing row of stitches after? realized the lahtverslehtba? "remain -

In contrast, the present invention aims to achieve the object

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Avoid the old of using Leexnadela irerbimdenen- Hb.-

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Sulängllchlceiten Baht connections can be established, the fully meet the requirements of modern textile products in terms of their elasticity and appearance

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Starting from a multi-needle tragaim H machine with a cross in the direction of the hitting and ^ affordable gripper to lay out a jade loop · in each of which an upper thread text leading IaSelA pierce for the purpose of looping, this task is according to the invention by arranging one of the 'Padenschling © la The area of the gripper reversal point and at least over

spreader released.

The thread loop after it has been laid out in the area of the hook »; pad spreader that detects the reversal point and holds it for so long »to the looper has run back so far that the laid out thread loop can no longer be pulled back, lies well turgemaS under the throat plate of the, Bähaaschina and is between its hold ", and release position can be moved at the same time as the gripping movement" -. ·

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In einfachster, the Fadenepreizer can according to one ausgestaiteadea Heromal def SrfiE.dua g, be ausgeMldet as a holding tongue, j in the back of the machine and Hährichtung herbewegfear in the ^manner:% is guided to be about at the moment of reversal in the gripper thereby forming pad loop punctures laterally, so that the bobbin thread is stretched over the retaining tongue and, as a result of an axial movement imparted to the gripper, which is superimposed on the return movement transversely to the hawing direction, it is approximately triangular. - As soon as the gripper his Buck According to movement when carried out, i düfi a tightening of tJnterfadens light is more to be feared, the retaining tab from the thread loop zurüclcgezogen and the will. The further sewing process takes place in the known manner using the bobbin thread that is now available in sufficient quantities.

As appropriate.-Which has been found to "the Padenspreiier to be provided according to a further feature of the invention by a wire bar, lies approximately in the plane of the Fadensohlingen and a TJ · furmigen portion has, approximately extending from the turning point of the hook point and its a Leg is provided as a retaining tongue with a pointing towards the aforementioned reversal point. According to a further essential feature of the invention, the thread spreader can be firmly connected to the transporter for the sewing material, so that no special drive is required for the thread spreader. ...

001852

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With the above-described] beE.szi arrangement sines

it is in a simple manner without spatial expansion of the Sr succeeded »to create a Sragara sewing machine with which the Sufficient XMter thread lengths is guaranteed without any kind of impairment of the sawn material as would occur with machines with empty needles

. In the following the invention is intended to stm. based on one of the attached Drawings illustrated embodiment example in more detail are described, but without this guide alone limited «u be · Ss shows:

? ig · 1 one! support arm with the throat plate omitted with the saw Mildungswerlczeugen in perspective rope view, where-Ibei the "thread gripper to lay out the shop loop roll has swung out,

Tig · 2 the shop spreader inserted in the shop loop hot thread gripper located in a Büclclaufstellung, and in the end

Jig · 3 the thread loop released by the? Adenspreixer with the pierced needles and the thread looper in its retracted position.

In the support arm 10 of the machine, not shown, is on a rotatably and? * IfO displaceably mounted gripper shaft 11 a thread gripper 12 is fixedly arranged. The thread gripper 12 has an upper portion 13, which is below the not shown The throat plate as a result of the rotation of the looper shaft 11 between the in

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1 and 5 shown in Eds. End positions essentially vertical «Sr 5ahtr ± eht« ng (arrow 14) Mn- and hersc & swivels · The bobbin thread 15 is fed to the gripper 12 via a thread guide 16 and occurs after a guide not shown here through _ the gripper section 13 through a guide opening 17 from the mentioned gripper portion 13 essentially upward for the purpose Formation of the thread loop 18. The cut material is transported in a manner known per se by means of a transporter 19 in direction of arrow 1 *. . -,. J

The Jadenepreixer 20 is designed as a wire bracket and besitzt- r • inen U-föreigen portion 21 · ϊλλ in the Bbene in which the patent is ^designed} denschlinge 18th The bow piece of the U-shaped

Section extends approximately in the door direction of the gripper section 13 after the τοη the actual Kahtbildungswerkseugen distant side. The two legs of the U-shaped loading spreader section 21 are bent approximately vertically in the direction of the hook. One of the primary vaccinations runs roughly in the area of the TM turning point the PadenftthrungsSffmrng 17 in the Padengreiferabschnitt 13 in alignment with the pad loop laid out by the thread gripper 12 18 and, as the tongue 22, is of a short axial extension ~ educated. The other bend is a long fastening rod 23 »which extends over the entire length of the Carrier 24 and a transporter that can be moved back and forth in the sawing direction 19 extends. The fastening rod is in the XTghe Stiohbildewerkzeuge by a firmly connected to the conveyor 19

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a Saltöäciiraube 26 on dsa "j. # x 25 dös Iraüspo ^ tsurs 19

determined in the manner that is intrinsically constrictively given?
Limits an axial adjustability is given

In jfig. 1, the faucet needles 27 attached to a needle bar which can be moved up and down are disengaged from the HMiig &t; the Ϊ & *
The gripper 12 is moved to its one end position for loop formation.

pivots. In this position ^ t lahtbildewerxseuge becomes & * r fet * j

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with the Sransporteir 19 connected jade spreader 20 in axial i

shifted direction in such a way that »retaining tongue 22 is in the upper]

half of the Sädengreiferabschnittes 15- returning thread section

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the pad loop 18 engages · While according to the representation Ia ι Hg. 2 the railway needles 27 then in the further course of the Hähvorgaaj stick the ges into the material and the thread gripper 12 calibrates from d * r in Pig. 1 in the sighting of its end position in

3 moved back, the voa thread gripper 12 is placed on the loop | 18 held by the retaining tongue 22 of the Zadenspreiser 20, which initially remains unchanged in its Iac · \. As indicated in particular in Hg «2, the thread gripper 12 experiences a shift in the axial direction on the carrier at the beginning of its Efioklaufbewegung
24 of the conveyor 19, so that a triangular loop-18 is formed into which, as the sowing process progresses, dl «
In each case one needle thread inserting a needle thread 27 »- like.
this is shown in particular by Pig «3 in the final phase.

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After the thread gripper 12 an essential part has traveled its Bück-- path of travel and the needles 27 fully inserted into the thread loop 18 halsen "" moving the yarn spreader 20 fixedly connected to the carrier 19 together with the conveyor 19 from the construction site _r surück with its The retaining tongue 22 is pulled out of the thread loop 18 and the jade loop 18 is released. The actual formation of the seam * then takes place in a manner known per se, with the pad loop section in Fig stands. ''

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Claims (3)

* 13 3)> 3 Yy * »y * - 10 - S chut ζ a 2i β ώ r U ch « Hehrnadeltragaxai-inihnaschine a with a crosswise to the drawing to and fro nving gripper (12) to lay a load loop (18), in each of which an oven thread leading 5 needles (27) pierce,
marked, by one of the Zadenschlisge {18} la B * r »ic-u des Qrmi £% T ^ uBucehrpunktefl, and" only 1 £ over "a substantial part of the gripper return path holds the Ikdensprelser (20). . 2. Hähmaechine according to claim 1,
characterized, - dad the pad spreader (2Ö) clock bit of the movement of the Load gripper (12) moved in the direction of the hook * and bit one in the area of the gripper pivot point in the shop loop (18) entering retaining tongue (22) is provided 3. Mowing machine according to claim 2, ■
characterized, that the thread spreader (20) is a wire hanger with ainem about in the thread loop lying U-shaped section. (21) which is approximately from the Tfiokehrpunkt of the gripper (12) extends away and one leg with one in Bichtun at the turning point (22) is provided as a retaining tongue. - 11 - .- ■ ? ^ Mkm * m-m'yM 4 "MSbmamehin" according to inspra ^ 2 or 3 "dadttrci, gek * snxeicim * t, dafi der 7feänen * pz» ise? {20) old des eats ΐ "" 7 '■' fc ⁵ '* "T