Background technology
Be well known that and in the manufacturing of twine such as cord fabric thread, sewing thread or bead yarn, comprise a treatment step, two treatment steps or three these three kinds of methods of treatment step.For the method for having only a treatment step, form on a plurality of spindles first twist thread directly to guide to have on the twisting spindle that forms whole winder unit and be plied to twist thread eventually and be wound into the bobbin of twisting thread eventually.Its advantage is, only needs the weaving loom just can production twine and can obtain the good quality of twisting thread, and its shortcoming is, feed speed is lower on the one hand, limited the size of the bobbin of twisting thread end on the other hand.For known method with two treatment steps, at first in first step, compile many twist yarns and and yarn bobbin on doubling.In ensuing second treatment step, doubling is transported to twisting machine and twists with the fingers into twine eventually by it as rove (Vorgarn).Feed speed is higher in this method.In known method with three treatment steps, twist yarn and be wound into bobbin in first step (step of just twisting thread), in second step of this method, many like this yarn of twisting on assembly winder, compile and be wound into and yarn bobbin.At last, in the 3rd treatment step (step of twisting thread eventually), and yarn bobbin is transported to twisting machine, produces eventually and twists thread.In this method, also can reach higher feed speed, but can influence the quality of twisting thread.
For example CH 226 901 discloses a kind of two step method of making twine, by use the two-for-one twisting spindle with yarn from a plurality of two-for-one twisting spindles directly by a public pulling device tractive and be transported on the winding bobbin, on first twisting machine, just twisting thread step and twist thread eventually and carry out doubling between the step.
Disclose a kind of two-for-one twisting spindles of twine of many single lines in patent application CH 348 345, it comprises a bobbin box (Spulenkorb), has the bobbin cradle of a plurality of rotations of holding the bobbin of just twisting thread.Concentrate at manifold trunk from single thread line that each bobbin of just twisting thread is extracted out, and lead through thread-carrier by the centre bore of spindle, and at bobbin box and the inwall that surrounds the balloon breaker of its bobbin box tractive that makes progress.The plying of the yarn of extracting out from the bobbin of just twisting thread is finished two-for-one twisting spindles by this way.That concentrate and regulate by thread-carrier around the tension force of the yarn of spindle by ballooning of yarn.
But twine's structure of making on this device is inhomogeneous, and this is because the yarn tension difference of the single thread line of extracting out from the bobbin of just twisting thread causes.
The specific embodiment
Fig. 2 has schematically illustrated two step method that form twine.In being called the first treatment step A that just twists thread, at first the yarn of extracting out from feeding bobbin 31,41,51 32,42,52 is twisted on a plurality of two-for-one twisting spindless 30,40,50, and the double twisting 33,43,53 that has the twist separately 34,44,54 imports winder units 60 through the tractive unit respectively.Winder unit 60 makes double twisting 33,43,53 pool together and adjacent distributions on the bobbin (and yarn bobbin) 55 of just twisting thread (being the first twist bobbin 15 among the step B).The bobbin 55 of just twisting thread preferably is wound into cross winding bobbin and winder unit 60 has corresponding reciprocating apparatus 61.
In the second treatment step B (step of twisting thread eventually), the double twisting 33,43,53 of just twist thread bobbin 15 and doubling thereon is transported to and forms whole twisting thread is on the two-for-one twisting spindles 70 of twine.Below for simplicity, the yarn of doubling is represented by same mark 5 on the bobbin 15 of just twisting thread.Yarn 5 has such twisting on two-for-one twisting spindles 70, it is opposite with the twist direction of just twist thread (double twisting 33,43,53) promptly to obtain whole twisting of twisting thread, and thus, single line 5 no longer shows to have the twist when twisting with the fingers eventually.At last, twist thread the end that forms like this and 73 be transported on the bobbin 76 of twisting thread eventually through tractive unit 74 and winder unit 75.The bobbin 76 of twisting thread eventually preferably is wound into cross winding bobbin.Winder unit 75 has the reciprocating member 77 of the cross winding bobbin that is suitable for accordingly reeling.
Fig. 1 shows the perspective view that forms the two-for-one twisting spindles 70 of twisting thread eventually.Two-for-one twisting spindles 70 has the spindle blade of being driven (not shown), and the bobbin 15 of just twisting thread is set thereon.The yarn 5 of doubling is drawn out of and is directed to the axial hole that passes spindle blade and stores up yarn dish (Speicherscheibe) at one and go up coiling by head on the bobbin 15 of just twisting thread, and this storage yarn dish is connected with spindle blade antitorquely.Yarn 5 warp yarn guide waies leave storage yarn dish 24, pass ballooning of yarn and the last tractive unit 74 of introducing around the bobbin 15 of just twisting thread.In order to limit ballooning of yarn, a cylindrical ingot jar 21 is set.Ingot cover 3 is set on ingot jar 21.
In the inside of ingot jar 21, the pulling device 2,10,13 of tractive yarn 5 from the bobbin 15 of just twisting thread, brake apparatus and the plying thread-carrier 8 (Mouline-Fadenfuhrer) that separates the separator 6 of the yarn 5 of pulling out from the bobbin 15 of just twisting thread, constitute with yarn arresting gear 14 forms are set.The yarn 5 of doubling is at first by pulling device 2,10,13 twist thread through just the head tractive of bobbin 15 and the guide roller 11 of lead-in separation device 6 on the bobbin 15 of just twisting thread.In the embodiment shown in fig. 1, its separator 6 is made of the comb with a plurality of rake teeths (Zinken), and each yarn 5 of feeding to yarn passes between the two adjacent rake teeths also separated thus respectively.Another kind of separator 6 also can have a plurality of fine ducts, feeds and passes each fine duct to yarn.
Pulling device 2,10,13 comprises the flier 2 of twisting thread (Campanello, i.e. " Kan Paneiluoshi's ") and the tractive thread-carrier 10 and the guide 13 of rotation, and tractive thread-carrier 10 slidably or be bearing on the roller movably and along this guide (Fig. 1) be set.The flier 2 of twisting thread is rotated by the tractive of tractive yarn 5.To this, the flier 2 of twisting thread is fixed on the inboard of ingot cover 3 and centers on respect to the axis rotating support of giving yarn bobbin axis C centering.The twist thread supporting member of flier 2 and brake apparatus 1 for example lag behind brake or the coupling of liquid brake are to form adjustable rotary resistance.Can regulate or control the rotary resistance of flier 2 and regulating thus or the tension force of the yarn 5 that control is pulled of twisting thread by brake apparatus 1.Interchangeablely be, also can use motor in order to control rotary resistance, this motor can drive or brake the flier 2 of twisting thread, and is constant with the rotary resistance that guarantees regulation.
On the flier 2 of twisting thread, fix a guide rail 13.This guide rail 13 is parallel to just twists thread the axis C of bobbin 15 and apart from this axis C one segment distance is arranged.When the bobbin 15 of just twisting thread was wound into fully, guide rail 13 was in the centre (Fig. 1) of just twisting thread between bobbin 15 peripheries and ingot jar 21 inboards approximately.
Tractive thread-carrier 10 is provided with along guide rail 13 movably.To this, as shown in Figure 1, tractive thread-carrier 10 is bearing on the guide rail 13 by sliding bearing 23.Tractive thread-carrier 10 has a ring 4, the yarn 5 that will be pulled by this ring 4 guiding.Pulling force by the yarn 5 that will be pulled makes the flier 2 of twisting thread rotate.The parameter of tractive thread-carrier 10 particularly its weight and/or its electromagnetic property preferably with the parameter of the yarn that will be pulled particularly parameter particularly type, coiling thickness, diameter and the coupling highly like this of its coiling of the weight and the selected yarn tension of its unit length and the bobbin 15 of just twisting thread, make equilibrium of forces to regulate automatically, at this moment, the position of tractive thread-carrier 10 is in the height H of the instantaneous yarn position of being extracted out by the bobbin 15 of just twisting thread at any time approximately under selected tractive tension force.In order to make the parameter matching of parameter and yarn and the bobbin of just twisting thread of tractive thread-carrier 10, interchangeable scheme is that a drive unit is set, it on one's own initiative with the position adjustments of tractive thread-carrier 10 to instantaneous height H of extracting yarn position out by the bobbin of just twisting thread.
After yarn 5 is extracted out from the bobbin of just twisting thread, through guide roller 11 lead-in separation devices 6, yarn 5 separated each other (Fig. 1) thereon.For the tension force of mutual balance yarn 5 separated from one another, yarn is passing separator 6 after Yarn Brake 14 guiding.Yarn Brake 14 shown in Figure 1 has the brake roller of a rotating support, the element regulation of its rotary resistance by being fit to.Yarn 5a, 5b, 5c separated from one another are wrapped on the roller circumferential section.Thus, each yarn 5 has the big yarn tension of approximately equal in the back of Yarn Brake 14.
Yarn separated from one another is importing plying thread-carrier 8 by Yarn Brake 14 back warp yarn slewing rollers 7 and being imported at last in the feed of twisting spindle thus, so that pool capital each other at retwist point 9.Plying thread-carrier 8 comprises a plate 17, and it is fixed on the inboard of ingot cover 22 by connector 23.Plate 17 has a plurality of holes 18, and they are fed to yarn corresponding to corresponding.Feed and pass each hole 18 to yarn.The mid point in each hole 18 is preferably on round wire.
According to the twine that apparatus and method of the present invention are produced, its twist is big, be difficult for overlength and twist thread evenly.This can realize especially like this, promptly at first separated from one another and then make that on Yarn braking 14 its yarn tension matches each other in separator 6 by feeding of bobbin 15 doublings of just twisting thread to yarn 5, thus, the yarn tension of each single thread is equal to each other, and can avoid the single thread overlength like this or the kink of twisting thread eventually.Except above-mentioned high yarn qualities,, also guaranteed the raising of speed of production owing on two-for-one twisting spindles, carry out first twist line step respectively and the effect of the step combination of twisting thread eventually.