DE1785663C3 - Device for the simultaneous presentation of parallel weft threads - Google Patents

Description

25th

disturb.

The invention is based on the object, proceeding from a device of the type mentioned at the beginning the twisting and tangling effects due to the straight guidance of the threads do not occur from the outset can occur to create a device with which at low conveyor speed a high Weft extraction performance is achieved.

The invention consists in that the device for pulling out the weft threads is designed such that by holding the cut thread end loops are formed, the two legs of which each form a weft thread that of the cutting device remote transport chain hook for inserting the loops with the weft thread spacing accordingly Distance are provided, and that in the area of the cutting device a device for inserting the cut thread ends in the clamps of a transport chain is provided. Through the loop-shaped Pulling out the weft threads in connection with the cutting and clamping of the thread ends in only one of the transport chains provided hooks with little construction effort and relatively A high weft pull-out performance is achieved at low transport speeds.

It is advantageous for a reliable gripping of the weft thread for the extraction process if the device has a conveyor for pulling out the weft threads, on which the weft thread spacing enlspre-

right back and forth to the direction of movement of a transport chain system for the weft threads presented is movable and which carries a pull-out device for the weft threads, with a cutting device for cutting off the pulled out clamps to be inserted into the transport chain system Weft threads.

Rei e ^; ner known from DT-PS 5 38 787 At e.ner aurcn uic

50

and pull it out into a loop. For easy and quick removal, it is advantageous if between The driving fingers have a roller in the middle, which reduces the effort required to pull them out.

For a quick and easy transfer of the weft thread pulled out into a loop onto the hook of the Conveyor chain, it is useful if to strip the weft thread loop from the driving fingers and to insert the weft thread loop into the hook is provided on a shaft, which

one ucuicuuiuii.ii.11 .i.u, ^ .. - _

great design effort required. Because the feed dog only has one weft thread length with one stroke pulls out, must with the given conveyor chain speed and given the number of threads pulled out at the same time, the speed of the feed dog be relatively large.

Furthermore, the DT-PS 6 16 440 is a device

65 application explained with reference to the drawing. It shows

1 shows a plan view of a device according to the invention,

F i g. 2 is a perspective view of the essential parts of the device;

F i g. 3 is a perspective view of the driving fingers and the parts cooperating with them.

I 7 85 663

The device bestelu jus an endless Iran porikette, which son / wc; endless ladles Γ, Γ is formed, the dui vh / ν. .-ι Kciiciu'ädersysieme

led '. graze, of which wheels 2 and 5 Amrn-'rvräde- .-. Nid. wai; i; \\! the wheels 4 leadership and The clamping riders form the drive wedges Γ. 1' takes place by de :. Hiekiroinoior b over the chain 7 and the gear 8 and the shaft 9. The gear 8 iieibt further by means of the shaft 10, the transmission 11, which. by means of the shaft 12, the drive of the Aiuhebskc. '. ci' wheels 2 get ..

Dx chains 1.1 "of the Fransportkeuc run, ι through their circulation between the Abschlusskauim Π and the Abehlagkamm 14 of a sewing machine shown in more detail.

On the chain Γ is a system of as llinspaimgrc! l'er serving terminals Ib arranged Au ', edcm Link of the chains 1 'is a pair of / around 1 nihaugen Serving hooks 17 are arranged on which the loops of the weft threads 43 are suspended.

Above the transport chain moves in the transverse direction to the endless rooster of Franspoi tketie at least one pair of conveyors 44 and 44, which on two endlessly revolving chains 45 is read by two pairs of sprockets 4b. 47 led grazing. There is on both conveyors 44, 44 ' a pair of driving fingers 48 are arranged which form the weft thread gripper. In front of these is in advance Position a roller 49 attached.

The weft threads 43 are drawn off from bobbins 64. They are guided through guide tubes 66. All guide tubes 6b are on one common holder 67 arranged. Between these guide tubes 66 and the one on the Transponkeue 1 arranged clamps tb is to be pulled out for each Loop of the weft threads 43 a thread clamp 68 is provided. These thread clamps 68 are on a common holder arranged, which back and forth in the direction of movement of the transport wedges is movable. Between the guide tube 6b and the thread clamps 68 is a not shown Arranged cutting device.

The pairs of mimicking fingers 48 each pull a weft thread 48 into a loop. The weft threads drawn out in a loop run here parallel to each other. The speed of the conveyors 44, 44 'is relative to the thread withdrawal speed small, since it is only half the thread withdrawal speed. By the guide roller 49 is a Gentle pulling out of the weft thread 48 is achieved.

With the driving fingers 48 of the conveyors 44, 44 a! I the Stelieh above u ;: ¹ "Hai · -". ··! ■ '. · ': .-.: - ■ -c '. Portal's scraper finger 50 j-jf ..: ' While 5! together that are stored in the warehouses 52: st. üie are attached in the machine frame. The fingers 50 engage between the pairs of driving fingers 48, but due to their division they exceed those of the hooks, 17.

D .'.- \ ;: ': u: .iti; -ier S.-h:; Lifaden 43 from the system it · bobbins b4. the AU; mounted on a creel 65 ■ ..: ■■■! that is located on one side of the machine! in ae clamps «6 is done by the system of guide tubes 66, which are mounted on a common holder 67.

The device described works; as follows:. The Transportkeucn, on the wedges 1 u-i-.t'inspanngreifer 16 and their Celts 1, the F.mhangehaken 17 are arranged, one end ¹ ·, continuous LJmlaufbew leads from egurig. The weft threads 43 are drawn out in loops and placed in the p .ure of the clamps 16 on the chain Y. and hung on J.-e pairs of the finhiingchaken 17. The weft threads 43 are entered between the stop comb 14 and the end comb 13 of the stitchbonding machine, where these weft threads 43 are inserted one after the other into the rows of stitches of the stitched fabric.

The 1 ransponeure 44, 44 'run after casting off the weft threads 43 in the hooks 17 empty above the path of the conveyors 44, 44 '. which the weft threads 43 take off, back. The trowel 45 carrying the conveyors 44, 44 ′ is then driven by the chain wheel 47 deflected so that de; empty feed dog 44 again the other path swings in, now it intervenes>, (each Pair of mimicking fingers 48 hold a weft thread 43. one end of which is held in thread clamp 68 and then under the settlement of the fixed coil 64 by the pair of mimicking fingers 48 is pulled out. Hai a transporter 44 'gripped weft threads 43, pulling fingers 48 the weft thread 43, which has one end in the clamps 16 of the chain Γ held v, ird. in the form of a loop, while at the same time in the upper web of the empty Transport dog 44 runs back. If the conveyor 44 'pulling out the weft threads 43 has reached the wedges, so brush the fingers 50 on a short rotary motion pulse of the shaft 51 hm the eye thread loops on the ! ■ Sheets 17.

Now the process described is repeated, by diverting the now lower conveyor 44 through the pulley 46 w leather into the upper track, while the running back Ti ansporteur 40 now grabs weft threads 43 in the area of the warp.

For this purpose 3 sheets of drawings

Claims (4)

Patent claims: l.Vonichtung for the simultaneous presentation of parallel weft threads by a weft moving out conveyor which perpendicular to! '■■ ■■ supply direction of a conveyor chain system 1 departures -.c weft yarns presented and herbewegL α and which carries an extraction device for the weft yarns, with a cutting device for cutting off the drawn weft threads to be inserted in clamps arranged on the transport chain system, characterized in that the device for drawing out the weft threads (43) is designed in such a way that loops are formed by holding the cut thread end, the two legs of which! each form a weft thread (43), that on the transport chain (1 ") facing away from the cutting device, hooks (17) are provided for inserting the loops with the weft thread spacing corresponding offshore, and that in the area of the cutting device a device for inserting the cut thread ends into the Clamps (16) of a transport chain (Γ) is provided. 2. Device according to claim 1, characterized in that that the device for pulling out the weft threads (43) has a conveyor (44) two driving fingers (48) are arranged at the distance corresponding to the weft thread spacing. 3. Apparatus according to claim 2, characterized in that between the driving fingers (48) centrally a roller (49) is upstream. 4. Apparatus according to claim 2 or 3, characterized in that for stripping off the weft thread loop from the driving fingers (48) and for inserting the weft thread loop into the hooks (17) a pair of fingers (50) is provided on a shaft (51) which between the driving fingers (48) on the Transport dog (44) can intervene. 40 has become known for the simultaneous presentation of several parallel weft threads, in which a thread pull-out chain arranged at an angle to the direction of movement of the transport chain is provided as the conveyor , whereby the threads are pulled out in loops through the pull-out / .iehketie. Because several threads in this device are guided in the same plane and cross one another during the extraction on the side of the machine facing the thread guides, twisting and tangling effects can occur, which can affect the operation of the machine