DE2350558A1 - PULL TEXTURING MACHINE - Google Patents

Description

DH.-ΙΝβ. DIPL.-ING. M. SC. CIPL.-FHYE. DR. Βΐη. ΡΊΥ5.

HÖGER- STELLRECHT- GR (ESSPACH - HAECKER

PATENT LAWYERS IN STUTTGART

A 40 386 b k-35 October 5th 1973

Part in

1, Umeda, Kita- * ku, Osaka-shi, Osaka Japan

Draw texturing machine

The invention relates to a drawing-texturing machine for synthetic Fibers with a processing part for drawing and for Generation of a Fstlschdralis ^ whose processing part at least a feed roller for feeding an undrawn thread, a first heating device, a false twisting device for twisting the thread, a first draw-off roller with a larger one

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k-35 - ΊΖίίη

S. October 1973 2350558

Peripheral speed rotates as the feed roller and the Pulling and feeding the thread is used, as well as a second heating device and a second take-off roller comprises the "the thread supplies to a winder. In particular, the invention relates to a drawing-texturing machine of the same Kind that is suitable to produce a false twist from an undrawn thread made of synthetic fibers, to produce bulky thread, the term "naughty thread" in the present description also partially drawn threads should fall.

Recently, in an attempt to reduce production costs, have crimped filaments or yarns been produced directly from undrawn filaments of synthetic fibers _? by simultaneously pulling the undrawn thread and texturing it. The devices for carrying out this method, ie the drawing-texturing machines, generally consist of three parts, namely a material feed device on which the full thread packages are located or on which the full thread packages are fed; a processing part for pulling and generating a false twist, which comprises 2ufuhrrolle_z for feeding undrawn threads to the processing part, a first heating device, false twisting devices, first take-off rollers for pulling or stretching the threads at a higher peripheral speed than the feed rollers, a second heating device, second take-off rollers, etc. and take-up devices adapted to take up the threads on a take-up spool.

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The simple arrangement of these three devices, i.e. the material feed devices, the draw-false twisting devices

on top of each other
and the winders / leads to an enlarged

Height of the machine and consequently to considerable difficulty "ten of the threads during the threading. To avoid these difficulties, it has been common practice to provide a simple false twister as it is, for example, described in US patent 3,165,881 / and in which ^one In such a machine, the threads are fed from the material feeders at the upper end of the processing part and removed from the winders at the lower end. However, such a drawing-texturing machine is still greater in height than one simple false twisting machine and the difficulties in the threading process remain. On the basis of the prior art described above, the present invention is based on the object of proposing an improved drawing-texturizing machine which has the disadvantages of the previously known machine avoids ine this type and in particular facilitates the threading process. "

This object is achieved by a drawing-texturing machine of the type described at the outset which, according to the invention, is characterized in that the machining part by a Intermediate panels reach through that material feed devices on opposite sides of the upper part of the processing part are arranged on the intermediate floor that between the material feed devices and the upper part of the processing part a first work floor (threading floor) it is provided that on opposite sides of the lower

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Part of the processing part on a basic working level of the machine winding devices are arranged and that between a second working floor (threading floor) is provided for the lower part of the processing part and the winding devices is under which the thread can be passed.

It has to achieve a steady and fast Proven operation to be advantageous if thread breakage detectors are also used and automatic control devices for the operating speed during the threading process are provided are, as a result of which the .practical possible uses for the drawing-texturing machine according to the invention are further improved permit.

It has also proven beneficial to make heating devices more special To use construction that both facilitate the threading process and have an improved heating effect. It is also advantageous to provide a special thread guide which is located behind the false twisting devices and the twist is improved.

Further details and advantages of the invention are provided below explained in more detail with reference to a drawing and / or

subject of the protection claims. In the drawing "show i

1 shows a side view of a drawing-texturing machine according to the invention;

FIG. 2 shows a plan view of the upper part of the machine according to FIG

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October 5, 1573 «Γ 2350558

Fig * 3 is a plan view of the lower part 4 machine according to FIG. 1; .

Fig. 4A side views of a preferred embodiment a threading device for

Drawing and texturing machine according to Fig. 1 7?

4E is a side view of a further Aüsfiih-

information for a mailing device for the the draw-texturing bag as shown in Fig. 1 or

■? *

Fig.SA is a perspective view of a side

up to 5C

tenansichti with individual parts for clarification are broken away or, a plan view of a thread guide element the threading device according to Figure 4A to 4D;

Fig. $ A plan view of a thread guide stage " the threading device according to FIGS. 4A to 4D;

7 shows a side view of a modified embodiment of a drawing-texturing machine according to FIG the invention;

8 is a plan view

Texturing machine according to FIG. 7;

9 shows an enlarged side view

Twisting devices of the drawing-texturing machine according to Fig.l or 7 with a soundproof cover and supply and discharge devices for air, with some parts broken away for clarity;

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Fig.iO a cross section through the second heating

. device for the drawing-texturing machine © according to Fig.l or 7;

Fig. HA side views of a particular GarnfühPUngs ^u element which immediately below

False twisting devices of the draw texturizers «- machine according to Fig.l or 7 is arranged and serves to improve the twist * * «* - with "the representation according to Fig.HB essential enlarged 1st;

Fig.l2A a side view of a thread breakage detector for a drawing-texturing machine according to Fig.l or 7;

12B shows a cross section through the thread breakage defect according to Fig.l2A, along the line XII-XII in this figure

Fig.l3A a schematic representation of the drive devices for the drawing-texturing machine according to Fig. 1 or 7 and

Fig.l3B is a block diagram of the drive devices Fig. 13A.

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The drawing-texturing machine according to the invention, which in the 1, 2 and 3 has a machining part with a frame 1, which stands on a base 2, which in turn is at a basic work level Fb. The upper part of the frame 1 stands over an intermediate floor Fl above the basic labor level Fo vörl

The processing part comprises feed rollers 3, which are carried by horizontal transverse frames on the frame 1, a first heating device H of the contact type, two false twisting devices 5, such as false twist tubes, two take-off rollers 6, a second heating device 7 of the non-contact type and second take-off rollers 8, wherein all the components mentioned are mounted on the frame 1. Such a one. The arrangement does not lead to any significant design changes compared to conventional false twist machines. However, since the first heating device 4 as well as the second heating device 7 have a length of more than t m and a cooling zone with a length between about 0.5 and 1 m is required between the first heating device and the false twist devices 5, the machining part reaches a Height of about 5 nr, measured from the base working level, LU = F = o = to the tip of the Beärbeitungsteiis ^ DiS ^ fäischzwirnvorrichtungen can include, for example, false twist tubes, bottle twisting units working with friction and false twisting units working with a pressure medium flow ^

A material feed device designated as a whole by the reference numeral 9 is arranged on the false ceiling Fl and has a frame 9a to which mandrels 9h are attached, each of which can pick up a thread package. The individual mandrels 9b are pivotable on a vertical frame element 9c mounted so that a mandrel can be swiveled to the rear of the frame when a new thread package is to be attached, so that the refilling of thread packages from the back of the

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Frame can be done.

The working space Sl between the upper part of the machining part and the material feed device 9 is used for the first Threading in and the part of the intermediate floor Fl lying within this area serves as the threading floor Fa. The naughty Yarn or the yarn Y, which is drawn off from the respective yarn packages, is consequently introduced into yarn guides 9d and 9e, which are provided on the front and above the material feed device 9 and is then in the upper area of the work space Sl into a guide Io of the machining part inserted, from where it comes to the feed rollers 3. There is one in each case between the guides Io and the feed rollers 3 Cutting device 59 provided for the thread.

The winding devices 11 of the drawing-texturing machine according to FIG of the invention are based on the basic work level Fo opposite sides of the machining part. Every Winding device 11 has a frame lld, on which reel holders 11a are mounted, which the winding reels wear, on which further friction rollers lib a shaft train systems are mounted, which drive the take-up spools by friction and on which, finally, transverse guides lic are mounted, which distribute the supplied thread in the transverse direction on the take-up spools, the take-up units are arranged in two or three stages. The threading of the threads into the individual winding units is carried out by the Front of the take-up devices from the work area S2 between the lower part of the processing part and the winding devices 11, while the removal of the finished Packages, i.e. the removal of the full take-up spools from the rear of the take-up devices 11 takes place. The second Work space S2 has a second threading floor and F2

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The thread guide or the thread path leads between the second take-off rollers 8 and the winding devices 11 under the second threading tray F2. Accordingly, the same guides 12a and 12b are attached below the second Einfädelbodens F2 and close, and the yarn is of the second take-off rollers 8 through the guides 12a and 12b out ', and from the latter up to the guides He each winding unit. The thread is then transferred through the corresponding transverse guide lic to the associated take-up spool in order to form a package. A thread breakage detector 58 is provided between each of the guides 12a and 12b. Slits are provided on the second threading base F2 through which the thread can run so that simple threading from above the threading base is possible 9 and the feed rollers 3 above the first threading base Fa so that easy and quick threading can take place in the work space Sl. The false twisting devices of the drawing-texturing machine are arranged along the processing part on opposite sides Winding devices are arranged corresponding to the false twisting devices 5, specifically along the material feed devices 9 and along the frame Hd of the winding devices 11.

During the threading process for the drawing-texturing machine, one pulls Operator on the first threading tray Fa a thread from a thread package in the material feed device 9 and guides this one after the other through the yarn guides 9d and 9e and through the guide Io between the feed rollers 3 and through the first heating device.U to the underside of the threading floor Fa. When the thread has been threaded this far, another operator will place it on your second threading

- to -

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floor F2, which is located in the second work space Sl, into the false twisting devices 5 between the first take-off rollers through the second heating device 7 between the second take-off rollers 8 and through the guides 12a, 12b and 12c threaded and then passed around the take-up spools of the take-up units, whereby the threading process is terminated. Another possibility is that the thread from the thread package in the material feeder 9 is withdrawn, is passed through the yarn guide 9d and from there ^ means ^ the ^ MPr similar devices described above Means under the underside of the first threading floor Fa through to the guide Io.

During the threading process, if the naughty Thread is brought into direct contact with the first heating device 4, there is a great risk that the thread will break. Around To avoid this disadvantage, a special threading device is used.

Next, the heating device of the drawing-texturing machine according to the invention, which is used to fix the texturing, will now be considered in more detail. In general, this heating device is heated to an extremely high temperature (in the case of polyester fibers, for example, the temperature is raised to about 20O ⁰ C), so that the undrawn thread, if it touches the heating device, is weakened by the action of heat to such an extent that the thread breaks immediately entry. In the event that the thread is stretched or drawn at such a high temperature imparted to it by the heater after the drawing operation has started, the duration of contact between the undrawn thread and the heater is very short even if the thread is once comes into contact with the heating device, while the thread is only heated to the drawing temperature before the point of contact. On the other hand, the false twist can be generated without difficulty

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be carried out even though the thread is below the point of contact is heated to the temperature for fixing the false twist, since the thread is already pulled at this point in time is. In contrast to this, during the threading process, as the thread is being worked with undrawn, difficult- When the false twist is generated, i.e. if the thread accidentally touches the hot heating device, it breaks a lot fast. Accordingly, many attempts have been made to avoid these threading difficulties, with a Method has been found by which the undrawn thread during the threading process at a distance from the heating device is held while it is in Contact iii with the heater is brought.

The threading method and the device for carrying it out, with which or with which the difficulties described above are to be avoided, will be explained in more detail below with reference to FIGS. UA, 4B, 4C and HD. In these figures, corresponding parts are provided with the same reference ^{numerals as in FIGS. 1 to 3. In FIGS. 4A to 1} ID, an apron type feed roller 3a is provided, as well as a first heating device 4a with grooves, a false twisting device 5 in the form of a false twist tube and a first take-off roller 6a of the skirt type. The first take-off roller 6a rotates at a higher peripheral speed than the feed roller 3a to pull the thread. The ratio of the peripheral speeds of the first feed roller and the second take-off roller is preferably between about 1.3 and 3.0. A pivot element 15 is pivotably mounted on a pivot pin 16, the pivot pin 16 being provided on a block 14 which in turn is fixedly mounted on the heating device 4a. A Kuryenelement is attached to the pivot element 15, which has a groove 17a on its front side for receiving the thread and which on its rear side

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is provided with a curved path 17b, as shown in FIGS. 5A, 5B and 5C. When the pivot element 15 pivots about the pivot pin 16, which is located between the first take-off roller 3a and the first heating device Ha , the cam element 17 pivots in the direction of an associated groove of the first heating device Ua. A thread guide roller 18 is mounted on the upper side of the cam element 17. Furthermore, a lever 19 is provided which is fixedly mounted on the pivot element 15 and which is provided with an elongated L-shaped grooved cam track 19a in which a sensing element 20 loosely engages. A rod 21 extends through an elongated opening or a longitudinal bore 22b in the first heating device Ha, and the rod 21 can move in the longitudinal bore 22b in the vertical direction, wherein the sensing element 2ö by means of an arm 23 is pivotable at the upper end 21a the rod 21 is attached. At the lower end 21b of the rod 21, an arm 24 is mounted which carries a pivotable scanning element 25. The scanning element 25 in turn engages in an L-shaped incised cam track 27a of a lever 27, which is pivotable about a pivot pin 26. A swivel element 28, the free end of which is angled and has an indentation 28a, is fixedly mounted on the lever 27. The pivot element 28 is pivotable like the pivot element 17, namely about the pivot pin 26. The rod 21 is carried at its lower end by an actuating lever 3o, which in turn is pivotably supported by a pin 29 attached to the frame of the processing part in the vicinity of the heating device 4a The rod 21 can thus be moved upwards or downwards with the aid of the actuating lever 3o, the scanning elements 2o and 25 moving together with the rod 21 upwards or downwards. When the actuating lever 3o is moved upwards in the exemplary embodiment under consideration, the upper scanning element 2o arrives in the incised cam track

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19a to a position above the pivot "16, while the Sensing element 25 arrives at the end of the incised cam track 27a which is furthest from the pivot pin 26 is removed, the leg of the L-shaped incised cam track 27a iin facing away from the pivot pin 26 runs essentially parallel to the rod 21.

If the actuating lever 3O is then lowered, as this is the case Figures 4B and 4C show the front part of the L-shaped Curved path 19a ,. in which the upper sensing element 20 slides loosely, parallel to the rod 21, before the lower sensing element 25 has reached the inflection point of the L-shaped cam 27a, and the sensing element 25 is still in the Part of the cam track 27a which runs parallel to the rod 21. If the operating lever 3O is then lowered further, the scanning element 25 reaches the inflection point of the curved path 27a, as shown in FIG. Although this is in the Not shown in the drawings, the operating lever 30 is preferably operated incrementally and is provided with a locking mechanism Mistake.

For the threading process, the operating lever is like this 4A shows, brought into its uppermost position, the cam element 17 and the pivot element 28 being spaced apart from the first heating device 4a. The naughty thread Y is pulled over the outside of the Schwenkeleraents 28 out and not held by the feed roller 3a. Then the thread is pulled through a guide 31 and then threaded into the not yet driven false twisting device 5, whereupon the thread end into a suction device is sucked and then from the feed roller 3a is being held. If the thread Y, which by then is slack

- 14 -

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hung between the feed roller 3a and the pivoting element 28, is sucked into the suction device, it is stretched and slides over the rear curved curved path I7d of the cam element 17 and possibly in the groove-shaped Guide 17a at the front end of the cam element 17. When the operating lever 3O is lowered in this operating state is, the rod 21 is also lowered so that the upper sensing element 20 while sliding through the cam 19a. gets into a lower position. The curve element 17 is pivoted about the pivot pin 16 counterclockwise. This has the consequence that the thread at the upper end of the first grooved heating device 4a by a The slot in the housing 22 of the heating device has come close to the heating surface 22a of the same and has reached a temperature there is heated, which makes it ductile.

The thread is then pressed against the false twisting device 5 in order to initiate the draw and false twisting process * At the same time, the thread begins to be drawn off by the first draw-off roller 6a.

As mentioned above, the first take-off roller 6a rotates at a higher peripheral speed than the feed roller 3a, However, since the thread Y between the rollers 3a and 6a of the grooved first heater 4a is heated ,, a cross-sectional tapering results in the areas of the thread Y heated in this way and the thread Y is on this Way pulled or stretched. At this point in time there is the curved path 27a, in which the lower scanning element loosely engages, but with its long leg still in

- 15 -

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October 5, 1973.

a position parallel to the rod 21 and the pivot element 28 is still in its starting position.

If now, as FIG. 4C shows, the actuating lever 30 is further lowered, then the cam element 17 is still rotated further until the curved path 19a is essentially parallel runs to the rod 21. Meanwhile the long thigh is puffing the curved path 27a is still parallel to the rod 21 and the pivot element 28 maintains its inclination. on the other hand moves the cam element 17 during ^ these processes Yarn Y slowly against the upper part of the heating surface 22a of the grooved first heating device 4a. Since the If thread Y is already pulled at this point in time, as already described above, there is no risk of that the thread breaks even if it contacts the first heater 4a. Rather, the yarn Y is further heated to taper points to obtain.

When the actuating lever 3Q finally moves into the position shown in Fig. 4D is lowered, i.e. to its lowest position, the upper end of the cam track 19a is parallel to the Rod 21 aligned, while the sensing element 20 only slides through the cam track 19a and the cam element 17 is not moved. If, on the other hand, the lower sensing element: 25 slides beyond the inflection point of the cam path 27a, then the pivot element 28 is counterclockwise around the The pivot pin 26 is pivoted and now presses the thread Y against the heating surface 22a of the first folding device 4a, which is provided with grooves. The thread can now be completely heated by the heating device and between the Feed roller 3a and the first take-off roller 6a are pulled,

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October 5, 1973 2350558

so that the false twist which the thread Y of the false twisting device 5 is granted, is fixed.

While an embodiment has been described above, at v / elchem the curve leash t 17 during the movement phase is actuated in front of the Schwenkeleitient 28, so that the thread Y is pressed first against the upper part of the heater 4a and then against the lower part thereof, it will be understood that with a suitable configuration of the scanning elements 2O and 25 and the cam tracks 19a and 27a also first the Swivel element 28 can be actuated.

From the above description it becomes clear that in the threading device which is used in the drawing-texturing machine according to FIG the invention is used, a curve leash nt is provided, which has a groove-shaped guide on its front for the thread, so that in the event that the thread is in the guide, there is no sagging of the Thread results when this from the feed roller in the suction device is sucked. On the other hand, due to the tension exerted on it, the thread slides along the Kuryen track of the cam element and automatically enters the groove-shaped Guide so that the thread is easy to thread and is guided properly. In an advantageous embodiment According to the invention, the cam element is arranged between the feed roller and the heating device, and the pivot element is arranged between the heating device and the false twisting device, so that the cam element and the lower Schwenketlement the thread path perpendicular to the normal thread path move when threading occurs. The disadvantage of conventional drawing texturing machines, that of frequent yarn breaks

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exists, can thus in a simple way and without special Skills are avoided, the threading within. Can take place in the shortest possible time, which greatly reduces the workload and prevents disruptions, so that Overall, there is an increased productivity.

In a modified embodiment of the threading device, which FIG. 4E shows, the threading can be carried out successfully in a manner similar to that described above Embodiment of a threading device. At the threading device According to FIG. 4E, a swivel element 15a when the actuating lever 30a is lowered, it is pivoted about a pivot pin 16a on a black 14a and one with the pivot element 15a firmly connected lever 19b with an I-shaped incised cam track 19c is counteracted at the same time pivoted clockwise about pivot pin 16a. This has the consequence that the thread is in contact with the heating surface the first heater arrives.

«
In the drawing-texturing machine according to the invention, a simpler threading device can also be successfully used. For example, a rod which can be rotated about its axis and extends from the upper to the lower end of the first heating device can be provided. Guide rods can be fixedly mounted at the top and bottom of the rod at a right angle to its axis of rotation. The thread can then be brought into contact with the heating surface of the first heating device by rotating the rod and guiding the guide rods from the outside into the region of the groove of the heating device.

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Enjoyed with the drawing-texturing machine <ler invention is used as a feed roller for feeding the undrawn thread to the wrong twisting device with a roll. used on a rough surface. The thread leaves the aventurine surface of the feed roller on the underside of the same, so that the Thread on the feed roller in the thread of a thread breakage is prevented. In the exemplary embodiment under consideration, compared to a collecting device for excess yarn can be provided in the lower part of the heating device 4a.

The draw texturing device according to the present invention can, as far as it has been described so far, successfully prevent a yarn breakage when threading the undrawn yarn Y, namely when using a threading device of the type described above. On the other hand, a thread breakage can hitherto cannot yet be completely prevented. In order to solve this problem, studies have been made as to which led to the realization that the best results can be achieved if the working speed of the Draw-texturing machine is reduced to a speed that is slower than normal during the threading process Working speed. In accordance with this further feature of the invention, a novel drive controller will be described below explained for use in draw-texturing machines is suitable and has exceptional practical advantages. In particular, the Sieh texturing machine includes according to the invention an electric main motor for driving the device for the thread feed and an electric secondary motor, which can be driven via a generator coupled to the main motor, and in turn the Drives false twisting devices. In addition to the main

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motor for driving the thread feed devices, an auxiliary electric motor is provided, which makes it possible to drive the drawing-texturing machine at low speed at the beginning of operation. After the threading process has been completed, the speed of the main motor can be increased step by step by means of the start circuit for the ^ ¹ * - ³ ^ ** control circuit of the main motor, if the auxiliary motor has been switched to the main rotor «

Preferably the speed is V (m / irin), which here is referred to as low speed, in the range between 5 <V_ <C 80 -De / 5, where De is the denier des Thread after it has passed the false twisting devices. As Fig.4B shows, during the threading process the thread guided so that it is kept away from the heating device, so. that the taper points are not at be concentrated at one point, but spread over the entire length- the incompletely drawn and textured The thread runs behind the heating device through the false twisting devices, where thread breaks can occur as a result of the changing tension on the thread during processing. if If the speed rises above 80 - De / 5, this phenomenon is of considerable importance. As Fig.4C shows, when moving the drawn and a false twist, the thread changes in the direction of the heating device , the position of the tapering points of the thread over its length to be expected to a high degree, which increases the possibility of the incompletely drawn and a false twist exhibiting thread touches the heating device directly, thereby that part of the thread that has the heating device touched directly, considerably weakened by the effect of heat

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will what. leads to a thread breakage. On the other hand, when the speed V < 5 m / min, there is little chance of a thread breakage. On the other hand, this is Thread speed, turn too low, so that while the excessively long time required for threading results in very little effectiveness.

Under these circumstances, the draw-texturing machine becomes after The start of the drawing-texturing process or the generation of false twist is automatically switched to the main motor, which is used for normal operation is suitable (high speed operation ^ using switching devices or timers and the speed is gradually increased with the aid of a start circuit in the control circuit for the main motor. on In this way, the slave motor for driving the false twisting devices can follow the normal speed operation, whereby the phenomenon of the occurrence of thread breakage during the increase of the speed is reduced. try have shown that increasing the speed for a period of more than a second, preferably during a period of two seconds, reduces the likelihood of thread breaks, regardless of the thickness of thread (50 to 15Ο denier) or the number of twists per meter (2500 to 3500). ""

13A and 13B show an auxiliary electric motor 34, a reduction gear 35, a one-way clutch 36 and a pulley 37 for transmitting the power of the auxiliary motor to gearwheel assemblies 38 and 39. The reference numeral 4O denotes the contacts of a switch for starting or stopping

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of the auxiliary motor 34. In the feed circuit for the main motor 33 a magnet winding 41 is also provided, which is an embodiment sform for the starting circuit. The magnet winding 41 can with the aid of a switch connected in parallel are short-circuited with contacts 44, whereby the start circuit after completion of the start-up process (after completion of the Increasing the speed). There is also a generator 46 is provided which is suitable for the secondary -to drive motor 47, which is used to drive the false twisting devices. The generator 46 is with the gear arrangement 39 connected. In the embodiment under consideration, the generator 46 is an alternator and the slave motor 47 is a synchronous motor. When the drawing-texturing machine starts operating, the actuation of an actuation key (not shown) causes actuation of switching devices (not shown), via which the contacts 40 are closed (at this point in time the contacts 40 are open). After the contacts 40 are closed, the auxiliary motor 34 starts for the one starting at low speed To turn the starting process and drive the thread, through the reduction gear 35, the one-way clutch 36 and the Gear arrangement 38, while at the same time the generator 46 is driven via the gear arrangement 39, so that the The secondary rotor 47 is driven by the drive energy generated by the generator 4 6 at a low speed can. Thus, while the machine is running at a low speed, the threading operation is carried out. After completion during the threading process, switching devices (not shown) are activated when the actuating button (not shown) actuated, which contacts 43 close. (At this point in time the contacts 40 are open.) After closing

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the contacts 43 start the main motor 33 to run, whereby the speed at which the thread is fed and twisted is increased until it reaches normal speed is. Since the input circuit for the main motor 33 contains the magnet winding 41, the speed of the increases Main motor 33 does not rise steeply, so that there is a buffering of the startup process results. After reaching normal speed, the contacts 44 with the help of a timer (not shown) closed and the magnet winding 41 is short-circuited. This enables normal operation the drawing texturing device and there are no thread breaks on. As the embodiments show, the generator 46 generates when the power source is upstream of the contacts. 43 there is an output signal even after the contacts have opened, while the engines are already standing. This has the consequence that the speed of the auxiliary motor 47 in the course of a kind Regenerative braking is reduced, in cooperation with the drawn thread, whereby thread breaks are prevented and which makes it possible to start the whole machine at the same time, without further threading after the replacement against an empty bobbin, a wound bobbin.

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According to the invention, there is no or only. a low possibility _r f, or a passing yarn breakage at the time of the beginning of the false twisting operation or the date on which the thread is in-the range 'of the heater is brought or at the time at which the speed is increased or "comparable .. Ringert is. the effectiveness of the threading is thus improved considerably, thereby ^ also results in an improvement .the draw texturing machine as a whole. in addition, the non-f to need the yarn quantity. which arises when Einfädelvorgäng be considerably reduced due to the low speed during the threading .

In the embodiment under consideration, a magnet winding. ment is used as a buffering start-up circuit. Of course, other known circuits can also be used instead be used. ,. ,

7 and 8 show a further preferred embodiment of a drawing ^ -Texturiermaschine according to the invention. The mechanical construction is aesthetic in this embodiment very similar to that of the drawing-texturing machine according to FIGS. 1 to 3, with the exception of the intermediate floor. Accordingly Corresponding parts are denoted by the same reference numerals as in the * first exemplary embodiment. In order to avoid a duplicate description, the following description should be used focus on the differences between the two embodiments.

In general, the thread packages of the undrawn thread are spun by a spinning machine and placed on creel carriages

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assembled. The carriages loaded with the thread packages are then brought to the drawing-texturing machine. In the embodiment according to FIGS. 7 and 8, the creel carriages are also grounded the undrawn thread packages are moved to the intermediate floor and set up in predetermined positions on the intermediate floor, while the undrawn threads are fed from this starting position to the feed rollers of the drawing-texturing machine. For this purpose, opposite transport paths are provided on the intermediate floor in the area of the upper part of the pieh texturing machine intended for the car. Furthermore, thread guides are provided that lead to the feed rollers above the transport paths, wherein the first threading floor lies between the transport paths and the upper part of the processing part of the machine. In addition, at the basic work level, on opposite sides of the lower part of the processing part, there are winders provided, the second threading tray between the winding devices and the lower part of the processing part the drawing-texturing machine is located. The yarn guides are provided, those of the winding devices under the second Guide threading bottom through.

Although compared to the first embodiment, not a significant one If there is a technical difference, there is a considerable saving in labor due to the fact that the Thread packages are brought to the processing station by means of a creel carriage.

In the second exemplary embodiment, the transport routes are located 5oa and 5ob on the intermediate floor Fl. The transport routes 5oa and 5ob include running boards 9e and side guides 9f,

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which are suitable for determining the position of a wagon. The creel carriages are identified by the reference numerals 51a and 51b designated and carry mandrels 54a and 54b, which are in steps one above the other are arranged, .and which are suitable, thread packages 53a and 53b to wear. The Aufsteckgatterwagen 51a and 51b have wheels 55a and 55b on their underside, which on the Running boards 9e run. In the exemplary embodiment under consideration, two transport paths 5oa and 5ob 'are provided. Between the transport paths are each provided with yarn guides 9g, which are assigned to the yarn packages arranged one above the other, and a yarn guide 9h is also provided above the yarn packages. The first work space Sl between the upper part the processing part or the actual texturing route and the transport paths 5oa and 5ob is used for the first threading process used and part of the intermediate floor Fl, which is located immediately below the first work space Sl, is as first threaded bottom Fa used. The naughty thread Y, which one is withdrawn from the respective thread package on the creel carriage, which are on the transport routes 5oa and 5ob, is guided through the yarn guide 9g, which is located between the two transport paths, and then through the yarn guide 9h, which is arranged above the transport routes. Thereafter the thread is drawn along above the working space Sl and threaded into a guide 56, which is located at the upper end of the processing part is located, and possibly also in the take-off roller 3, then the rear end of the thread package 53a connected to the creel carriage 51a with the beginning of the thread of the yarn package 53b. After the thread of the respective thread package 53a is withdrawn, the thread is now also from the thread package 53b on the creel carriage 51b.

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If the thread from both thread packages is complete is withdrawn, another creel carriage with full packs of yarn takes the place of the previous creel carriage brought and the process is repeated as described above.

In a further embodiment of the drawing-texturing machine According to the invention, only a single transport route for slip-on gate wagons can be provided. If in this embodiment a thread package becomes empty, the machine is stopped and another carriage that carries a full thread package, is brought to the place of the previous car. The end of the thread already in the machine is marked with the beginning of the thread from the thread package on the new creel carriage, and the machine is then again put into operation.

From the above description it is clear that the drawing-texturing machine according to the invention, in particular with regard to the supply of new thread packages, with regard to the threading devices and with regard to the threading process without Difficulties and can be used with high economic effectiveness. At this point it should be noted that that, as with other texturing machines, with the one according to the invention Draw texturing machine upstream of the thread path between thread guides 12a and 12b below the Second threading base F2, a thread break detector 58 is provided. Another option is to use a special Provide thread guide close to and below the false twisting device 5 in order to be sure of an opposite one

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40 9818/1073

, -. - .ι tj

L>. October Iy 73

To achieve twisting of the threads comprising several fibers, and to. To provide a second heating device of a special design for this purpose and thereby increased effectiveness of the To achieve drawing texturing device. In further training of the The invention also provides a cover of a special shape in order to achieve a .Schällschutz, as the high speed rotating false twisting devices, especially rotating tubes, generate considerable noise. By a such coverage, the texturing machine is further improved.

A preferred yarn breakage detector will now be based on FIGS. 12A and 12B for a drawing-texturing machine according to the invention are explained in more detail. The thread breakage detector shown works very advantageously and without damaging the thread, since it exerts only a very slight pull, and comprises a feeler lever 62 on a base plate 61. The feeler lever sits on an axle 63 which is rotatably mounted in a bearing 64 is. At the rear end of the sensing lever 62, a cylindrical weight 67 is attached, in such a way that the center of gravity of Feeler lever 62 and weight 67 at a point G in front of the axis of rotation 63 of the feeler lever 62 is located.

This arrangement creates a torque which acts in the direction of arrow A in Fig.l2A. If, however, a thread Y is in contact with the underside of the tip of the feeler lever 62, which is arranged immediately upstream of the winding devices, results in a ..upwardly directed Force between about 1 and 2 grams on the feeler lever 62, due to the. Thread tension so that the feeler lever 62 is in equilibrium is held. On the base plate 61 is by means of a

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Screw a microswitch 68 attached to a switch arm 68a, which can be operated by turning the feeler lever through a specified angle. Such microswitches are commercially available. The microswitch 68 is related to of the Fühihebels 62 arranged so that in the normal state Weight 67 at the rear end of the sensing lever 62 is at a distance from the tip of the switching arm 68a of the microswitch 68. The distance is preferably as great as possible. The weight 67 only then comes into contact with the tip of the Switching arm 68a when the sensing lever 62 is deflected in the direction of arrow A from the equilibrium state.

A stop 74 made of a leaf spring is attached to a cover 7o made of a transparent acrylic glass plate by means of screws and nuts assembled. The stop 74 is suitable to secure the weight 67 when the feeler lever 62 is counterclockwise is pivoted, which is during the threading or when resetting is the case after a thread break.

Under normal conditions, the feeler lever 62 is kept in contact with the running yarn Y with a slight pressure, namely by means of the weight 67, thereby preventing the likelihood of the occurrence of dust flakes. In the event of a thread break the sensing lever 62 rotates as a result of the torque in the direction of arrow A and when the pivoting movement is sufficient the weight 67 hits the tip of the switching arm 68a of the microswitch 68 and overcomes the spring force of the switching arm 68a and pivots it, whereby the microswitch 68 is actuated. The microswitch 68 in turn actuates the cutting device 59 upstream of the feed

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roll 3 so that the thread feed is interrupted to prevent the thread from wrapping around the feed rollers. The cutting device can be designed in such a way that it can be actuated with the aid of a magnetic switch.

In the yarn break detector under consideration, the feeler lever 62 is normally without mechanical contact with the microswitch 68, so that no errors, such as actuation of the microswitch, occur even if the feeler lever 62 due to changes in the tension of the traveling yarn Y to some extent is deflected in the vertical direction.

Fig. 10 shows the structure of the second heating device of the drawing-texturing machine according to the invention. As is clear from the drawing, the second heater has slots and heats the threads evenly without touching them. A pipe 75 serves to pass the heating medium through, the product sold under the trademark "Dourtherm", for example, can be used as the heating medium. The pipe 75 extends along the thread path and at the front of the tube 75 a U-shaped groove or slot 76 is provided. The thread runs in the slot 76. The slot 76 should form part of the tube 75 and the dimensions should be between about 3 and 15 mm in width and about 5 and 30 mm in depth. In front of the tube 75 there is a slot 78 which communicates with the slot 76, which leads to the outside. The slot 78 runs in the direction of the thread path. He will limited by insulation pieces 79 and 8o, which may consist of asbestos or the like. Above the insulation pieces

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79 and 8o a coating 81 is provided. The width of the slot 78 should preferably be approximately 3 mm in order to achieve advantageous thermal insulation and to create favorable working conditions. The outwardly opening end of the slot 78 should preferably be conically widened. With this construction, the thread can be easily inserted into the slot 78 without special tools. In other words, the thread can be easily inserted into the slot 78 of the second heating device. The upper and lower parts of the pipe 75 are connected via a pipe (not shown) to the supply pipe (not shown) for the heating medium, the supply pipe running in the longitudinal direction of the heating device.The circulation of the heating medium through said pipes to heat the closed slot 76 ensures a uniform temperature within the slot (or within the two slots) for the two units, so that the thread Y ¹ provided with a false twist can be heated without the risk of uneven heating of the individual fibers, so that a uniform elastic Elongation and consequently a high quality product.

As is well known, a thread can after going through a false twisting device has passed through when it is heated in a second heating device of the drawing-texturing machine, for in the event that the fibers that make up the thread are not twisted well, a compression point is obtained which the Quality deteriorated considerably. Accordingly, in the drawing-texturing machine according to the invention, it is above has been described, an annular yarn guide 82 is provided,

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which is especially suitable for reverse twisting. The yarn guide 82 is arranged about 1 to Io ram, preferably 2 to 5 mm below the cross web 5a * of the false twisting device 5 and thus lies between the false twisting device and the first take-off roller 6, but to the side of the longitudinal axis of the rotary tube _t which forms the false twisting device. The thread guide 82 is provided with a guide bore which has at least one sharp edge 82b on which the thread rests. When the thread Y 'passes through the thread guide on its way, it has been found that the individual fibers are satisfactorily separated from one another.

9 shows a soundproof cover for the false twisting devices 5 of the drawing-texturing machine according to the invention. As is clear from the drawing, does the cover 86 cover the false twisting device 5 _? the auxiliary devices for the reverse twist , which comprise the annular yarn guide 82 and a guide rod 83 and the drive devices 85 for the false twisting device 5. The soundproof cover 86 comprises horizontal covers 86a made of two sheets, an upper and a lower, which are parallel to each other longitudinally the center line of the machine and a front cover 86b which is pivotable about a pin 86c which is attached to the horizontal cover 86a. The front cover 86b covers the front of the twist tubes of the false twister. The air inside the soundproof cover 86 and the oil mist accompanying the fadefi can be discharged into the atmosphere via an outlet line 86d and an outlet line 88 through outlet openings 89.

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The soundproof cover 86 is on a support 87 of the Machine firmly mounted. Close to the junction of the horizontal cover 86 and the front cover 86b Groove areas 9oa and 9ob are provided. In addition, cooled air can be drawn into the interior of the soundproof cover from a Cooling air line 88 'are introduced. The soundproof cover constructed as described above serves to encapsulating the source of the machine's noise, achieving excellent soundproofing, v / as has the result that the working conditions are significantly improved.

409818/10 73

Claims (1)

A 4ο 386 b k - 137 5th October 1973 Patent claims: 1. Draw-texturing machine for synthetic fibers, with one Machining part for pulling and creating a false twist, the processing part of which has at least one feed roller for feeding an undrawn thread, a first Heating device, a false twisting device for twisting of the thread, a first take-off roller that rotates at a greater peripheral speed than the feed roller and the Pulling and feeding the thread is used, as well as a second A heating device and a second take-off roller which delivers the thread to a winder, characterized in that the processing part reaches through an intermediate floor {Fl), that material feed devices (9> on opposite sides of the upper part of the machining part are arranged on the intermediate floor (Fl) that between the material feed devices (9) and the upper part of the processing part a first working floor (threading floor Fa) is provided that on opposite sides Sides of the lower part of the processing part on a basic work level (FO) of the machine. Winders (11) are arranged and that between the lower part of the processing part and the winding devices (11) a second working floor (threading floor F2) is provided, under which the thread can be passed is. 409818 /. 1073 A 4o 386 b. k - 137 5.1O.73 2. drawing-texturing machine according to claim l, characterized in that that the material feed devices comprise creel carriages (51a, 51b) as well as transport routes (5oa, 5ob) on the intermediate floor (Fl), along which the creel carriages (51a, 51b) can be moved. 3. Drawing-texturing machine according to claim 1, characterized in that that a threading device is provided which has two interconnected thread guide elements (Swivel elements 15, 28) which are provided at the upper and lower ends of the first heating device (4), respectively and which can be moved together via their connection (rod 21). 4. Drawing-texturing machine according to claim 3, characterized in that the threading device comprises upper yarn guide devices for feeding the thread (Y) to the first heating device (4) and lower yarn guide devices for feeding the thread (Y) to the false twisting devices (5) that the upper yarn guide devices comprise a first pivot element (15) which is pivotably mounted on a block (14) which is fixedly mounted on the processing part, as well as a control element (lever 19) _r via which the pivot element is mutually into a rest position, a preparatory position and a normal operating position is brought about that the lower yarn guide devices comprise a second pivot element (28), which is pivotably mounted on a block which is fixedly mounted on the processing part, as well as a - 3 A09818 / 1073 A 4o 386 b
k - 137
5.1ο.73 second control through which the second Schwenkeleittent (28) in a rest position and a normal operating position Can be brought - that the first and the second control element via a substantially perpendicular Rod (21) can be detected and actuated, which the first and second control actuated simultaneously that the rod (21) from its rest position one after the other can be brought into a first, second and third position and that the control elements are designed so that at Adjustment of the rod (21). in their first position only the first swivel element (15) is swiveled into its guide position so that when the rod (21) is adjusted in its second position only the first swivel element (15) is adjusted to its normal operating position and that when the rod (21) is moved into its third operating position, the second pivoting element (28) is pivoted into its operating position, while the first pivoting element "(15) remains in its operating position. 5, drawing-texturing machine according to claim 1 to 4%, characterized in that that your drive system is an electric one Main motor (33) comprises which the thread drive's system drives as well as a Nebenmotpr (47), which the false twisting devices drives and which via a generator (46). is connected to the main motor (33). 6. drawing-texturing machine according to claim 5 ,. characterized, that an electric auxiliary motor ("34) is provided / which, in parallel with the main motor (33) - $ 4 0981/10 73 A 4ο 386 b
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5.1ο.73 is switched and which is used for the drive, the machine ₍ . during the threading process. 7. Drawing-texturing machine according to one or more of the claims 1 to 6, ... characterized, that the feed roller L3) at the upper end of the machining part arranges, .is: and -a roller with a rough surface, is. 8. drawing-texturing machine according to claim 1 to 7 ,,, characterized in that? indicates that a thread breakage detector is provided which is located between the second take-off rollers (8) and the take-up rolls lvorr ich lines (11) is arranged and the removal interrupts the thread from the material feed devices (9) when a thread break occurs. - ... ^ /. . ... - 9. drawing-texturing machine according to claim 1 to, 8, ·, characterized in that the first heating device (4) to be heated Touches the thread and that the second heating device (7) works without contact. Io. Drawing-texturing machine according to claim 9, characterized in that that the second heating device has a tube (75) for passing a heating medium through, which extends along the thread path and that a U-shaped slot for heating the thread is provided in the tube and that on the side of the tube (75) to which the slot (76) opens, a thermal insulation (79, 8o) is provided, in which a slot (78) is provided which extends in extension of the slot (76). 409818/1073 A 4ο 386 b
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5.Ιο.73 11, drawing-texturing machine according to claim 1 to 10, characterized in that the false twisting device (5) is a rotary tube and that ^{an annular yarn guide (82) is provided between the crosspiece (5a 1} ) of the rotary tube and the first take-off roller (6) , which is arranged at a distance of about 1 to 10 mm downward from the transverse web (.5a ¹ ) and laterally offset from the axis of the rotary tube and that a guide rod {83) is arranged below the annular guide (82}. 12. drawing-texturing machine according to claim 1 to 11, characterized in that a soundproof cover (86) is provided, which surrounds the false twisting devices (5), and that with the soundproof cover (86) Lines (86d, 88, 88 ", 89) for feeding and discharging connected by air. 4098 18/1073 Blank page